Postoperative pancreatic fistula(POPF)is a frequent complication after pancre-atectomy,leading to increased morbidity and mortality.Optimizing prediction models for POPF has emerged as a critical focus in surgical res...Postoperative pancreatic fistula(POPF)is a frequent complication after pancre-atectomy,leading to increased morbidity and mortality.Optimizing prediction models for POPF has emerged as a critical focus in surgical research.Although over sixty models following pancreaticoduodenectomy,predominantly reliant on a variety of clinical,surgical,and radiological parameters,have been documented,their predictive accuracy remains suboptimal in external validation and across diverse populations.As models after distal pancreatectomy continue to be pro-gressively reported,their external validation is eagerly anticipated.Conversely,POPF prediction after central pancreatectomy is in its nascent stage,warranting urgent need for further development and validation.The potential of machine learning and big data analytics offers promising prospects for enhancing the accuracy of prediction models by incorporating an extensive array of variables and optimizing algorithm performance.Moreover,there is potential for the development of personalized prediction models based on patient-or pancreas-specific factors and postoperative serum or drain fluid biomarkers to improve accuracy in identifying individuals at risk of POPF.In the future,prospective multicenter studies and the integration of novel imaging technologies,such as artificial intelligence-based radiomics,may further refine predictive models.Addressing these issues is anticipated to revolutionize risk stratification,clinical decision-making,and postoperative management in patients undergoing pancre-atectomy.展开更多
AIM: To identify risk factors related to pancreatic fistula in patients undergoing distal pancreatectomy (DP) and to determine the effectiveness of using a stapled and a sutured closed of pancreatic stump. METHODS: Si...AIM: To identify risk factors related to pancreatic fistula in patients undergoing distal pancreatectomy (DP) and to determine the effectiveness of using a stapled and a sutured closed of pancreatic stump. METHODS: Sixty-four patients underwent DP during a 10-year period. Information regarding diagnosis, operative details, and perioperative morbidity or mortality was collected. Eight risk factors were examined. RESULTS: Indications for DP included primary pancreatic disease (n = 38, 59%) and non-pancreatic malignancy (n = 26, 41%). Postoperative mortality and morbidity rates were 1.5% and 37% respectively; one patient died due to sepsis and two patients required a reoperation due to postoperative bleeding. Pancreatic fistula was developed in 14 patients (22%); 4 of fistulas were classified as Grade A, 9 as Grade B and only 1 as Grade C. Incidence of pancreatic fistula rate was significantly associated with four risk factors: pathology, use of prophylactic octreotide therapy, concomitant splenectomy, and texture of pancreatic parenchyma. The role that technique (either stapler or suture) of pancreatic stump closure plays in the development of pancreatic leak remains unclear. CONCLUSION: The pancreatic fistula rate after DP is 22%. This is reduced for patients with non-pancreatic malignancy, fibrotic pancreatic tissue, postoperative prophylactic octreotide therapy and concomitant splenectomy.展开更多
Following an increase in the use of the GIA stapler for treating a pancreatic stump, more techniques to prevent postoperative pancreatic juice leakage have been required. We describe one successful case using our new ...Following an increase in the use of the GIA stapler for treating a pancreatic stump, more techniques to prevent postoperative pancreatic juice leakage have been required. We describe one successful case using our new technique of invaginating the cut end of the pancreas into the stomach to prevent a pancrea-tic fistula(PF) from occurring. A 50-year-old woman with pancreatic cancer in the tail of the pancreas underwent distal pancreatectomy, causing a grade A PF. We resected the distal pancreas without additional reinforcement to invaginate the stump into the gastric posterior wall with single layer anastomosis using a 3-0 absorbable suture. The drain tubes were removed on the third postoperative day. Although a grade A PF was noted, the patient was discharged on foot on the eleventh postoperative day. Our technique may be a suitable method for patients with a pancreatic body and tail tumor.展开更多
Pancreatic fistula is one of the most common complications after the distal pancreatectomy.Many methods have been tried to solve the problem,but no one is optimal,especially for the soft pancreatic stump cases.This st...Pancreatic fistula is one of the most common complications after the distal pancreatectomy.Many methods have been tried to solve the problem,but no one is optimal,especially for the soft pancreatic stump cases.This study used ligamentum teres hepatis as a patch to cover the pancreatic stump.Between October 2010 and December 2012,seventyseven patients who had undergone distal pancreatectomy with a soft pancreatic stump were divided into two groups:group A(n=39,patients received conventional ligated main pancreatic duct method)and group B(n=38,patients underwent a coverage procedure).Patients in group A had a longer recovery from postoperative pancreatic fistula than those in group B(16.4±3.5 vs 10.8±1.6 days,P【0.05).The coverage procedure with ligamentum teres hepatis is a safe,effective and convenient method for patients with a soft pancreas remnant during distal pancreatectomy.展开更多
AIM:To evaluate the feasibility and safety of laparoscopic distal pancreatectomy(LDP) compared with open distal pancreatectomy(ODP).METHODS:Meta-analysis was performed using the databases,including PubMed,the Cochrane...AIM:To evaluate the feasibility and safety of laparoscopic distal pancreatectomy(LDP) compared with open distal pancreatectomy(ODP).METHODS:Meta-analysis was performed using the databases,including PubMed,the Cochrane Central Register of Controlled Trials,Web of Science and BIOSIS Previews.Articles should contain quantitative data of the comparison of LDP and ODP.Each article was reviewed by two authors.Indices of operative time,spleen-preserving rate,time to fluid intake,ratio of malignant tumors,postoperative hospital stay,incidence rate of pancreatic fistula and overall morbidity rate were analyzed.RESULTS:Nine articles with 1341 patients who underwent pancreatectomy met the inclusion criteria.LDP was performed in 501(37.4%) patients,while ODP was performed in 840(62.6%) patients.There were significant differences in the operative time,time to fluid intake,postoperative hospital stay and spleen-preserving rate between LDP and ODP.There was no difference between the two groups in pancreatic fistula rate [random effects model,risk ratio(RR) 0.996(0.663,1.494),P = 0.983,I2 = 28.4%] and overall morbidity rate [random effects model,RR 0.81(0.596,1.101),P = 0.178,I2 = 55.6%].CONCLUSION:LDP has the advantages of shorter hospital stay and operative time,more rapid recovery and higher spleen-preserving rate as compared with ODP.展开更多
Recent advances in surgical techniques and perioperative management have markedly reduced operative morbidity after distal pancreatectomy(DP).However,some questions remain regarding the protocol for the perioperative ...Recent advances in surgical techniques and perioperative management have markedly reduced operative morbidity after distal pancreatectomy(DP).However,some questions remain regarding the protocol for the perioperative management of DP,in particular,with regard to the development of pancreatic fistula(PF).A review of DP was therefore conducted in order to standardize the management of patients for a favorable outcome.Overall,operative technique and perioperative management emerged as two critical factors contributing to favorable outcome in DP patients.As for the operative method,surgical and closure techniques exhibited differences in outcome.Laparoscopic DP generally yields more favorable perioperative outcomes compared to open DP,and is applicable for benign tumors and some ductal carcinomas of the pancreas.Robotic DP is also available for safe pancreatic surgery.En bloc celiac axis resection offers a high R0 resection rate and potentially allows for some local control in the case of advanced pancreatic cancer.Following resection,staple closure was not found to reduce the rate of PF when compared to hand-sewn closure.In addition,ultrasonic dissection devices,fibrin glue sealing,and staple closure with mesh reinforcement were shown to significantly reduce PF,although there was some bias in these studies.In perioperative management,both preoperative and postoperative treatment affected outcome.First,preoperative endoscopic pancreatic stenting may be an effective prophylactic measure against fistula development following DP in selected patients.Second,in postoperative management,a multifactorial approach including prophylactic antibiotics improved high surgical site infection rates following complex hepato-pancreatobiliary surgery.Furthermore,although conflicting results have been reported,somatostatin analogues should be administered selectively to patients considered to have a high risk for PF.Finally,careful drain management also facilitates a favorable outcome in patients with PF after DP.The results of the review indicate that laparoscopic DP coupled with perioperative management influences outcome in DP patients.展开更多
Pancreatic surgery represents one of the most challenging areas in digestive surgery. In recent years, an increasing number of laparoscopic pancreatic procedures have been performed and laparoscopic distal pancreatect...Pancreatic surgery represents one of the most challenging areas in digestive surgery. In recent years, an increasing number of laparoscopic pancreatic procedures have been performed and laparoscopic distal pancreatectomy (LDP) has gained world-wide acceptance because it does not require anastomosis or other reconstruction. To date, English literature reports more than 300 papers focusing on LDP, but only 6% included more than 30 patients. Literature review confirms that LDP is a feasible and safe procedure in patients with benign or low grade malignancies. Decreased blood loss and morbidity, early recovery and shorter hospital stay may be the main advantages. Several concerns still exist for laparoscopic pancreatic adenocarcinoma excision. The individual surgeon determines the technical conduction of LDP, with or without spleen preservation; currently robotic pancreatic surgery has gained diffu- sion. Additional researches are necessary to determine the best technique to improve the procedure results.展开更多
BACKGROUND: Since conventional methods are difficult to deal with pancreatic tumors close to the portal veins, we investigated the feasibility and norms for retrograde distal pancreatectomy by cutting the neck of the ...BACKGROUND: Since conventional methods are difficult to deal with pancreatic tumors close to the portal veins, we investigated the feasibility and norms for retrograde distal pancreatectomy by cutting the neck of the pancreas first. METHOD: The clinical data and surgical procedures of retrograde distal pancreatectomy given to 11 patients from July 2001 to June 2007 were analyzed. RESULTS: All 11 operations were completed successfully. The mean time of the operation was 143 71 minutes. The mean volume of hemorrhage was 239 ml. The mean time of hospitalization was 12 +/- 4.2 days. No blood transfusion was needed during the operation, and all patients had a good postoperative recovery. No neopathy of diabetes mellitus, pancreatic fistula or other complications occurred after the operation. The follow-up of all patients (4-60 months) showed that 3 patients survived for 14, 16 and 33 months, respectively, and the other patients are still alive. CONCLUSIONS: Retrograde distal pancreatectomy is useful for exposing the portal and superior mesenteric veins while avoiding operative injury. Interception of the blood supply of the spleen helps to reduce the volume of hemorrhage, while making the operation easier and the operative time short. It is advantageous for tumor resection of the body of the pancreas near the portal veins.展开更多
BACKGROUND: The use of laparoscopic distal pancreatectomy(LDP) increased in the past twenty years but the real diffusion of this technique is still unknown as well as the type of centers(high or low volume) in wh...BACKGROUND: The use of laparoscopic distal pancreatectomy(LDP) increased in the past twenty years but the real diffusion of this technique is still unknown as well as the type of centers(high or low volume) in which this procedure is more frequently performed.DATA SOURCE: A systematic review was performed to evaluate the frequency of LDP in Italy and to compare indications and results in high volume centers(HVCs) and in low volume centers(LVCs).RESULTS: From 95 potentially relevant citations identified, only5 studies were included. A total of 125 subjects were analyzed, of whom 95(76.0%) were from HVCs and 30(24.0%) from LVCs.The mean number of LDPs performed per year was 6.5. The mean number of patients who underwent LDP per year was 8.8in HVCs and 3.0 in LVCs(P0.001). The most frequent lesions operated on in HVCs were cystic tumors(62.1%, P0.001) while,in LVCs, solid neoplasms(76.7%, P0.001). In HVCs, malignant neoplasms were treated with LDP less frequently than in LVCs(17.9% vs 50.0%, P〈0.001). Splenectomy was performed for non-oncologic reason frequenter in HVCs than in LVCs(70.2%vs 25.0%, P0.004). The length of stay was shorter in HVCs than in LVCs(7.5 vs 11.3, P0.001). No differences were found regarding age, gender, ductal adenocarcinoma treated, operative time, conversion, morbidity, postoperative pancreatic fistula,reoperation and margin status.CONCLUSIONS: LDPs were frequently performed in Italy.The "HVC approach" is characterized by a careful selection of patients undergoing LDP. The "LVC approach" is based on the hypothesis that LDPs are equivalent both in short-term and long-term results to laparotomic approach. These data are not conclusive and they point out the need for a national register of laparoscopic pancreatectomy.展开更多
Postoperative pancreatic fistula (POPF) is one of the most severe complications after pancreatic surgeries. POPF develops as a consequence of pancreatic juice leakage from a surgically exfoliated surface and/or anasto...Postoperative pancreatic fistula (POPF) is one of the most severe complications after pancreatic surgeries. POPF develops as a consequence of pancreatic juice leakage from a surgically exfoliated surface and/or anastomotic stump, which sometimes cause intraperitoneal abscesses and subsequent lethal hemorrhage. In recent years, various surgical and perioperative attempts have been examined to reduce the incidence of POPF. We reviewed several well-designed studies addressing POPF-related factors, such as reconstruction methods, anastomotic techniques, stent usage, prophylactic intra-abdominal drainage, and somatostatin analogs, after pancreaticoduodenectomy and distal pancreatectomy, and we assessed the current status of POPF. In addition, we also discussed the current status of POPF in minimally invasive surgeries, laparoscopic surgeries, and robotic surgeries.展开更多
AIM: To study the feasibility and safety of middle segmental pancreatectomy (MSP) compared with pancreaticoduodenectomy (PD) and extended distal pancreatectomy (EDP). METHODS: We studied retrospectively 36 cases that ...AIM: To study the feasibility and safety of middle segmental pancreatectomy (MSP) compared with pancreaticoduodenectomy (PD) and extended distal pancreatectomy (EDP). METHODS: We studied retrospectively 36 cases that underwent MSP, 44 patients who underwent PD, and 26 who underwent EDP with benign or low-grade malignant lesions in the mid-portion of the pancreas, between April 2003 and December 2009 in Ruijin Hospital. The perioperative outcomes and long-term outcomes of MSP were compared with those of EDP and PD. Periop-erative outcomes included operative time, intraoperative hemorrhage, transfusion, pancreatic fistula, intraabdominal abscess/infection, postoperative bleeding, reoperation, mortality, and postoperative hospital time. Long-term outcomes, including tumor recurrence, newonset diabetes mellitus (DM), and pancreatic exocrine insufficiency, were evaluated. RESULTS: Intraoperative hemorrhage was 316.1 ± 309.6, 852.2 ± 877.8 and 526.9 ± 414.5 mL for the MSP, PD and EDP groups, respectively (P < 0.05). The mean postoperative daily fasting blood glucose level was significantly lower in the MSP group than in the EDP group (6.3 ± 1.5 mmol/L vs 7.3 ± 1.5 mmol/L, P < 0.05). The rate of pancreatic fistula was higher in the MSP group than in the PD group (42% vs 20.5%, P = 0.039), all of the fistulas after MSP corresponded to grade A (9/15) or B (6/15) and were sealed following conservative treatment. There was no significant difference in the mean postoperative hospital stay between the MSP group and the other two groups. After a mean follow-up of 44 mo, no tumor recurrences were found, only one patient (2.8%) in the MSP group vs five (21.7%) in the EDP group developed new-onset insulin-dependent DM postoperatively (P = 0.029). Moreover, significantly fewer patients in the MSP group than in the PD (0% vs 33.3%, P < 0.001) and EDP (0% vs 21.7%, P = 0.007) required enzyme substitution. CONCLUSION: MSP is a safe and organ-preserving option for benign or low-grade malignant lesions in the neck and proximal body of the pancreas.展开更多
Combined ductal and vascular injuries are awesome complications of pancreatic injury.We report on a 29-year-old male unrestrained driver who sustained a blunt abdominal injury from the steering wheel in a high velocit...Combined ductal and vascular injuries are awesome complications of pancreatic injury.We report on a 29-year-old male unrestrained driver who sustained a blunt abdominal injury from the steering wheel in a high velocity head-on car collision.He developed a pancreatic fistula,portosplenic venous thrombosis and sinistral portal hypertension as a result of complete duct disruption at the pancreatic neck.We describe a safe surgical strategy of spleen-preserving distal pancreatectomy after failed medical and endoscopic management.展开更多
Pancreatic cysts include a variety of benign, premalignant, and malignant lesions. Endometrial cysts in the pancreas are exceedingly rare lesions that are difficult to diagnose pre-operatively. This report describes t...Pancreatic cysts include a variety of benign, premalignant, and malignant lesions. Endometrial cysts in the pancreas are exceedingly rare lesions that are difficult to diagnose pre-operatively. This report describes the findings in a 43-year-old patient with a recent episode of acute pancreatitis who presented with a large cyst in the tail of the pancreas. Imaging demonstrated a loculated pancreatic cyst, and cyst fluid aspiration revealed an elevated amylase and carcinoembryonic antigen. The patient experienced an interval worsening of abdominal pain, fatigue, diarrhea, and a 15-pound weight loss 3 mo after the initial episode of pancreatitis. With concern for a possible pre-malignant lesion, the patient underwent a laparoscopic distal pancreatectomy with splenectomy, which revealed a 16cm×12cm×4cm lesion. Final histopathology was consistent with an intra-pancreatic endometrial cyst. Here we discuss the overlapping imaging and laboratory features of pancreatic endometrial cysts and mucinous cystic neoplasms of the pancreas.展开更多
Objective:The aim of this study was to compare complications and oncologic outcomes of patients undergoing laparoscopic distal pancreatectomy(LDP)and open distal pancreatectomy(ODP)at a single center.Methods:Dis...Objective:The aim of this study was to compare complications and oncologic outcomes of patients undergoing laparoscopic distal pancreatectomy(LDP)and open distal pancreatectomy(ODP)at a single center.Methods:Distal pancreatectomies performed for pancreatic ductal adenocarcinoma during a 4-year period were included in this study.A retrospective analysis of a database of this cohort was conducted.Results:Twenty-two patients underwent LDP for pancreatic ductal adenocarcinoma,in comparison to seventy-six patients with comparable tumor characteristics treated by ODP.No patients with locally advanced lesions were included in this study.Comparing LDP group to ODP group,there were no significant differences in operation time(P=0.06)or blood loss(P=0.24).Complications(pancreatic fistula,P=0.62;intra-abdominal abscess,P=0.44;postpancreatectomy hemorrhage,P=0.34)were similar.There were no significant differences in the number of lymph nodes harvested(11.2±4.6 in LDP group vs.14.4±5.5 in ODP group,P=0.44)nor the rate of patients with positive lymph nodes(36%in LDP group vs.41%in ODP group,P=0.71).Incidence of positive margins was similar(9%in LDP group vs.13%in ODP group,P=0.61).The mean overall survival time was(29.6±3.7)months for the LDP group and(27.6±2.1)months for ODP group.There was no difference in overall survival between the two groups(P=0.34).Conclusions:LDP is a safe and effective treatment for selected patients with pancreatic ductal adenocarcinoma.A slow-compression of pancreas tissue with the GIA stapler is effective in preventing postoperative pancreatic fistula.The oncologic outcome is comparable with the conventional open approach.Laparoscopic radical antegrade modular pancreatosplenectomy contributed to oncological clearance.展开更多
Solid pseudopapillary neoplasms(SPNs)of the pancreas are rare,low-grade,malignant neoplasms that are mostly seen in young women in the second and third decades of life and are quite uncommon in children.Standard resec...Solid pseudopapillary neoplasms(SPNs)of the pancreas are rare,low-grade,malignant neoplasms that are mostly seen in young women in the second and third decades of life and are quite uncommon in children.Standard resection for benign and borderline neoplasms of the pancreas is associated with a substantial risk of postoperative morbidity and long-term functional impairment,whereas enucleation leads to less morbidity and preserves healthy parenchyma as well as exocrine and endocrine function.Enucleation of SPNs has been increasingly reported to be feasible and safe for preserving the normal physiological function of the pancreas,especially in teenagers and children.This review summarizes findings published in recent years on the enucleation of SPNs as well as potential future developments and directions.Enucleation has undoubtedly come to stay as an alternative surgical procedure for SPNs.However,many questions remain unresolved,and future directions toward the best surgical indication,the prevention and intervention of complications,especially pancreatic fistula,intraoperative resection margin safety assessment,and long-term oncology prognosis remain to be evaluated and should be explored in future clinical trials.展开更多
Robotic system has been increasingly used in pancreatectomy. However, the effectiveness of this method remains uncertain. This study compared the surgical outcomes between robot-assisted laparoscopic distal pancreatec...Robotic system has been increasingly used in pancreatectomy. However, the effectiveness of this method remains uncertain. This study compared the surgical outcomes between robot-assisted laparoscopic distal pancreatectomy and conventional laparoscopic distal pancreatectomy. During a 15-year period, 35 patients underwent minimally invasive approach of distal pancreatectomy in our center. Seventeen of these patients had robot-assisted laparoscopic approach, and the remaining 18 had conventional laparoscopic approach. Their operative parameters and perioperative outcomes were analyzed retrospectively in a prospective database. The mean operating time in the robotic group (221.4 min) was significantly longer than that in the laparoscopic group (173.6 min) (P = 0.026). Both robotic and conventional laparoscopic groups presented no significant difference in spleen-preservation rate (52.9% vs. 38.9%) (P = 0.505), operative blood loss (100.3 ml vs. 268.3 ml) (P = 0.29), overall morbidity rate (47.1% vs. 38.9%) (P = 0.73), and post-operative hospital stay (11.4 days vs. 14.2 days) (P = 0.46). Both groups also showed no perioperative mortality. Similar outcomes were observed in robotic distal pancreatectomy and conventional laparoscopic approach. However, robotic approach tended to have the advantages of less blood loss and shorter hospital stay. Further studies are necessary to determine the clinical position of robotic distal pancreatectomy.展开更多
文摘Postoperative pancreatic fistula(POPF)is a frequent complication after pancre-atectomy,leading to increased morbidity and mortality.Optimizing prediction models for POPF has emerged as a critical focus in surgical research.Although over sixty models following pancreaticoduodenectomy,predominantly reliant on a variety of clinical,surgical,and radiological parameters,have been documented,their predictive accuracy remains suboptimal in external validation and across diverse populations.As models after distal pancreatectomy continue to be pro-gressively reported,their external validation is eagerly anticipated.Conversely,POPF prediction after central pancreatectomy is in its nascent stage,warranting urgent need for further development and validation.The potential of machine learning and big data analytics offers promising prospects for enhancing the accuracy of prediction models by incorporating an extensive array of variables and optimizing algorithm performance.Moreover,there is potential for the development of personalized prediction models based on patient-or pancreas-specific factors and postoperative serum or drain fluid biomarkers to improve accuracy in identifying individuals at risk of POPF.In the future,prospective multicenter studies and the integration of novel imaging technologies,such as artificial intelligence-based radiomics,may further refine predictive models.Addressing these issues is anticipated to revolutionize risk stratification,clinical decision-making,and postoperative management in patients undergoing pancre-atectomy.
文摘AIM: To identify risk factors related to pancreatic fistula in patients undergoing distal pancreatectomy (DP) and to determine the effectiveness of using a stapled and a sutured closed of pancreatic stump. METHODS: Sixty-four patients underwent DP during a 10-year period. Information regarding diagnosis, operative details, and perioperative morbidity or mortality was collected. Eight risk factors were examined. RESULTS: Indications for DP included primary pancreatic disease (n = 38, 59%) and non-pancreatic malignancy (n = 26, 41%). Postoperative mortality and morbidity rates were 1.5% and 37% respectively; one patient died due to sepsis and two patients required a reoperation due to postoperative bleeding. Pancreatic fistula was developed in 14 patients (22%); 4 of fistulas were classified as Grade A, 9 as Grade B and only 1 as Grade C. Incidence of pancreatic fistula rate was significantly associated with four risk factors: pathology, use of prophylactic octreotide therapy, concomitant splenectomy, and texture of pancreatic parenchyma. The role that technique (either stapler or suture) of pancreatic stump closure plays in the development of pancreatic leak remains unclear. CONCLUSION: The pancreatic fistula rate after DP is 22%. This is reduced for patients with non-pancreatic malignancy, fibrotic pancreatic tissue, postoperative prophylactic octreotide therapy and concomitant splenectomy.
文摘Following an increase in the use of the GIA stapler for treating a pancreatic stump, more techniques to prevent postoperative pancreatic juice leakage have been required. We describe one successful case using our new technique of invaginating the cut end of the pancreas into the stomach to prevent a pancrea-tic fistula(PF) from occurring. A 50-year-old woman with pancreatic cancer in the tail of the pancreas underwent distal pancreatectomy, causing a grade A PF. We resected the distal pancreas without additional reinforcement to invaginate the stump into the gastric posterior wall with single layer anastomosis using a 3-0 absorbable suture. The drain tubes were removed on the third postoperative day. Although a grade A PF was noted, the patient was discharged on foot on the eleventh postoperative day. Our technique may be a suitable method for patients with a pancreatic body and tail tumor.
基金supported by grants from the National Natural Science Foundation of China(81001058,81172276 and 81172005)National Natural Science Foundation of Shanghai(11ZR1407000)PhD Programs Foundation of Ministry of Education of China(20110071120096)
文摘Pancreatic fistula is one of the most common complications after the distal pancreatectomy.Many methods have been tried to solve the problem,but no one is optimal,especially for the soft pancreatic stump cases.This study used ligamentum teres hepatis as a patch to cover the pancreatic stump.Between October 2010 and December 2012,seventyseven patients who had undergone distal pancreatectomy with a soft pancreatic stump were divided into two groups:group A(n=39,patients received conventional ligated main pancreatic duct method)and group B(n=38,patients underwent a coverage procedure).Patients in group A had a longer recovery from postoperative pancreatic fistula than those in group B(16.4±3.5 vs 10.8±1.6 days,P【0.05).The coverage procedure with ligamentum teres hepatis is a safe,effective and convenient method for patients with a soft pancreas remnant during distal pancreatectomy.
基金Supported by The key project grant from the Science and Technology Department of Zhejiang Province,No.2011C13036-2
文摘AIM:To evaluate the feasibility and safety of laparoscopic distal pancreatectomy(LDP) compared with open distal pancreatectomy(ODP).METHODS:Meta-analysis was performed using the databases,including PubMed,the Cochrane Central Register of Controlled Trials,Web of Science and BIOSIS Previews.Articles should contain quantitative data of the comparison of LDP and ODP.Each article was reviewed by two authors.Indices of operative time,spleen-preserving rate,time to fluid intake,ratio of malignant tumors,postoperative hospital stay,incidence rate of pancreatic fistula and overall morbidity rate were analyzed.RESULTS:Nine articles with 1341 patients who underwent pancreatectomy met the inclusion criteria.LDP was performed in 501(37.4%) patients,while ODP was performed in 840(62.6%) patients.There were significant differences in the operative time,time to fluid intake,postoperative hospital stay and spleen-preserving rate between LDP and ODP.There was no difference between the two groups in pancreatic fistula rate [random effects model,risk ratio(RR) 0.996(0.663,1.494),P = 0.983,I2 = 28.4%] and overall morbidity rate [random effects model,RR 0.81(0.596,1.101),P = 0.178,I2 = 55.6%].CONCLUSION:LDP has the advantages of shorter hospital stay and operative time,more rapid recovery and higher spleen-preserving rate as compared with ODP.
文摘Recent advances in surgical techniques and perioperative management have markedly reduced operative morbidity after distal pancreatectomy(DP).However,some questions remain regarding the protocol for the perioperative management of DP,in particular,with regard to the development of pancreatic fistula(PF).A review of DP was therefore conducted in order to standardize the management of patients for a favorable outcome.Overall,operative technique and perioperative management emerged as two critical factors contributing to favorable outcome in DP patients.As for the operative method,surgical and closure techniques exhibited differences in outcome.Laparoscopic DP generally yields more favorable perioperative outcomes compared to open DP,and is applicable for benign tumors and some ductal carcinomas of the pancreas.Robotic DP is also available for safe pancreatic surgery.En bloc celiac axis resection offers a high R0 resection rate and potentially allows for some local control in the case of advanced pancreatic cancer.Following resection,staple closure was not found to reduce the rate of PF when compared to hand-sewn closure.In addition,ultrasonic dissection devices,fibrin glue sealing,and staple closure with mesh reinforcement were shown to significantly reduce PF,although there was some bias in these studies.In perioperative management,both preoperative and postoperative treatment affected outcome.First,preoperative endoscopic pancreatic stenting may be an effective prophylactic measure against fistula development following DP in selected patients.Second,in postoperative management,a multifactorial approach including prophylactic antibiotics improved high surgical site infection rates following complex hepato-pancreatobiliary surgery.Furthermore,although conflicting results have been reported,somatostatin analogues should be administered selectively to patients considered to have a high risk for PF.Finally,careful drain management also facilitates a favorable outcome in patients with PF after DP.The results of the review indicate that laparoscopic DP coupled with perioperative management influences outcome in DP patients.
文摘Pancreatic surgery represents one of the most challenging areas in digestive surgery. In recent years, an increasing number of laparoscopic pancreatic procedures have been performed and laparoscopic distal pancreatectomy (LDP) has gained world-wide acceptance because it does not require anastomosis or other reconstruction. To date, English literature reports more than 300 papers focusing on LDP, but only 6% included more than 30 patients. Literature review confirms that LDP is a feasible and safe procedure in patients with benign or low grade malignancies. Decreased blood loss and morbidity, early recovery and shorter hospital stay may be the main advantages. Several concerns still exist for laparoscopic pancreatic adenocarcinoma excision. The individual surgeon determines the technical conduction of LDP, with or without spleen preservation; currently robotic pancreatic surgery has gained diffu- sion. Additional researches are necessary to determine the best technique to improve the procedure results.
文摘BACKGROUND: Since conventional methods are difficult to deal with pancreatic tumors close to the portal veins, we investigated the feasibility and norms for retrograde distal pancreatectomy by cutting the neck of the pancreas first. METHOD: The clinical data and surgical procedures of retrograde distal pancreatectomy given to 11 patients from July 2001 to June 2007 were analyzed. RESULTS: All 11 operations were completed successfully. The mean time of the operation was 143 71 minutes. The mean volume of hemorrhage was 239 ml. The mean time of hospitalization was 12 +/- 4.2 days. No blood transfusion was needed during the operation, and all patients had a good postoperative recovery. No neopathy of diabetes mellitus, pancreatic fistula or other complications occurred after the operation. The follow-up of all patients (4-60 months) showed that 3 patients survived for 14, 16 and 33 months, respectively, and the other patients are still alive. CONCLUSIONS: Retrograde distal pancreatectomy is useful for exposing the portal and superior mesenteric veins while avoiding operative injury. Interception of the blood supply of the spleen helps to reduce the volume of hemorrhage, while making the operation easier and the operative time short. It is advantageous for tumor resection of the body of the pancreas near the portal veins.
文摘BACKGROUND: The use of laparoscopic distal pancreatectomy(LDP) increased in the past twenty years but the real diffusion of this technique is still unknown as well as the type of centers(high or low volume) in which this procedure is more frequently performed.DATA SOURCE: A systematic review was performed to evaluate the frequency of LDP in Italy and to compare indications and results in high volume centers(HVCs) and in low volume centers(LVCs).RESULTS: From 95 potentially relevant citations identified, only5 studies were included. A total of 125 subjects were analyzed, of whom 95(76.0%) were from HVCs and 30(24.0%) from LVCs.The mean number of LDPs performed per year was 6.5. The mean number of patients who underwent LDP per year was 8.8in HVCs and 3.0 in LVCs(P0.001). The most frequent lesions operated on in HVCs were cystic tumors(62.1%, P0.001) while,in LVCs, solid neoplasms(76.7%, P0.001). In HVCs, malignant neoplasms were treated with LDP less frequently than in LVCs(17.9% vs 50.0%, P〈0.001). Splenectomy was performed for non-oncologic reason frequenter in HVCs than in LVCs(70.2%vs 25.0%, P0.004). The length of stay was shorter in HVCs than in LVCs(7.5 vs 11.3, P0.001). No differences were found regarding age, gender, ductal adenocarcinoma treated, operative time, conversion, morbidity, postoperative pancreatic fistula,reoperation and margin status.CONCLUSIONS: LDPs were frequently performed in Italy.The "HVC approach" is characterized by a careful selection of patients undergoing LDP. The "LVC approach" is based on the hypothesis that LDPs are equivalent both in short-term and long-term results to laparotomic approach. These data are not conclusive and they point out the need for a national register of laparoscopic pancreatectomy.
文摘Postoperative pancreatic fistula (POPF) is one of the most severe complications after pancreatic surgeries. POPF develops as a consequence of pancreatic juice leakage from a surgically exfoliated surface and/or anastomotic stump, which sometimes cause intraperitoneal abscesses and subsequent lethal hemorrhage. In recent years, various surgical and perioperative attempts have been examined to reduce the incidence of POPF. We reviewed several well-designed studies addressing POPF-related factors, such as reconstruction methods, anastomotic techniques, stent usage, prophylactic intra-abdominal drainage, and somatostatin analogs, after pancreaticoduodenectomy and distal pancreatectomy, and we assessed the current status of POPF. In addition, we also discussed the current status of POPF in minimally invasive surgeries, laparoscopic surgeries, and robotic surgeries.
基金Supported by The Ministry of Health Sector Funds of China,No. 201002020
文摘AIM: To study the feasibility and safety of middle segmental pancreatectomy (MSP) compared with pancreaticoduodenectomy (PD) and extended distal pancreatectomy (EDP). METHODS: We studied retrospectively 36 cases that underwent MSP, 44 patients who underwent PD, and 26 who underwent EDP with benign or low-grade malignant lesions in the mid-portion of the pancreas, between April 2003 and December 2009 in Ruijin Hospital. The perioperative outcomes and long-term outcomes of MSP were compared with those of EDP and PD. Periop-erative outcomes included operative time, intraoperative hemorrhage, transfusion, pancreatic fistula, intraabdominal abscess/infection, postoperative bleeding, reoperation, mortality, and postoperative hospital time. Long-term outcomes, including tumor recurrence, newonset diabetes mellitus (DM), and pancreatic exocrine insufficiency, were evaluated. RESULTS: Intraoperative hemorrhage was 316.1 ± 309.6, 852.2 ± 877.8 and 526.9 ± 414.5 mL for the MSP, PD and EDP groups, respectively (P < 0.05). The mean postoperative daily fasting blood glucose level was significantly lower in the MSP group than in the EDP group (6.3 ± 1.5 mmol/L vs 7.3 ± 1.5 mmol/L, P < 0.05). The rate of pancreatic fistula was higher in the MSP group than in the PD group (42% vs 20.5%, P = 0.039), all of the fistulas after MSP corresponded to grade A (9/15) or B (6/15) and were sealed following conservative treatment. There was no significant difference in the mean postoperative hospital stay between the MSP group and the other two groups. After a mean follow-up of 44 mo, no tumor recurrences were found, only one patient (2.8%) in the MSP group vs five (21.7%) in the EDP group developed new-onset insulin-dependent DM postoperatively (P = 0.029). Moreover, significantly fewer patients in the MSP group than in the PD (0% vs 33.3%, P < 0.001) and EDP (0% vs 21.7%, P = 0.007) required enzyme substitution. CONCLUSION: MSP is a safe and organ-preserving option for benign or low-grade malignant lesions in the neck and proximal body of the pancreas.
文摘Combined ductal and vascular injuries are awesome complications of pancreatic injury.We report on a 29-year-old male unrestrained driver who sustained a blunt abdominal injury from the steering wheel in a high velocity head-on car collision.He developed a pancreatic fistula,portosplenic venous thrombosis and sinistral portal hypertension as a result of complete duct disruption at the pancreatic neck.We describe a safe surgical strategy of spleen-preserving distal pancreatectomy after failed medical and endoscopic management.
文摘Pancreatic cysts include a variety of benign, premalignant, and malignant lesions. Endometrial cysts in the pancreas are exceedingly rare lesions that are difficult to diagnose pre-operatively. This report describes the findings in a 43-year-old patient with a recent episode of acute pancreatitis who presented with a large cyst in the tail of the pancreas. Imaging demonstrated a loculated pancreatic cyst, and cyst fluid aspiration revealed an elevated amylase and carcinoembryonic antigen. The patient experienced an interval worsening of abdominal pain, fatigue, diarrhea, and a 15-pound weight loss 3 mo after the initial episode of pancreatitis. With concern for a possible pre-malignant lesion, the patient underwent a laparoscopic distal pancreatectomy with splenectomy, which revealed a 16cm×12cm×4cm lesion. Final histopathology was consistent with an intra-pancreatic endometrial cyst. Here we discuss the overlapping imaging and laboratory features of pancreatic endometrial cysts and mucinous cystic neoplasms of the pancreas.
基金supported by the Zhejiang Provincial Natural Science Foundation of China(No.LY17H160026)
文摘Objective:The aim of this study was to compare complications and oncologic outcomes of patients undergoing laparoscopic distal pancreatectomy(LDP)and open distal pancreatectomy(ODP)at a single center.Methods:Distal pancreatectomies performed for pancreatic ductal adenocarcinoma during a 4-year period were included in this study.A retrospective analysis of a database of this cohort was conducted.Results:Twenty-two patients underwent LDP for pancreatic ductal adenocarcinoma,in comparison to seventy-six patients with comparable tumor characteristics treated by ODP.No patients with locally advanced lesions were included in this study.Comparing LDP group to ODP group,there were no significant differences in operation time(P=0.06)or blood loss(P=0.24).Complications(pancreatic fistula,P=0.62;intra-abdominal abscess,P=0.44;postpancreatectomy hemorrhage,P=0.34)were similar.There were no significant differences in the number of lymph nodes harvested(11.2±4.6 in LDP group vs.14.4±5.5 in ODP group,P=0.44)nor the rate of patients with positive lymph nodes(36%in LDP group vs.41%in ODP group,P=0.71).Incidence of positive margins was similar(9%in LDP group vs.13%in ODP group,P=0.61).The mean overall survival time was(29.6±3.7)months for the LDP group and(27.6±2.1)months for ODP group.There was no difference in overall survival between the two groups(P=0.34).Conclusions:LDP is a safe and effective treatment for selected patients with pancreatic ductal adenocarcinoma.A slow-compression of pancreas tissue with the GIA stapler is effective in preventing postoperative pancreatic fistula.The oncologic outcome is comparable with the conventional open approach.Laparoscopic radical antegrade modular pancreatosplenectomy contributed to oncological clearance.
基金Supported by the Key Research and Development Projects in Sichuan Province,No.2019YFS0043the 1·3·5 Project for Disciplines of Excellence,West China Hospital,Sichuan University,No.ZY2017302-1.3.5.
文摘Solid pseudopapillary neoplasms(SPNs)of the pancreas are rare,low-grade,malignant neoplasms that are mostly seen in young women in the second and third decades of life and are quite uncommon in children.Standard resection for benign and borderline neoplasms of the pancreas is associated with a substantial risk of postoperative morbidity and long-term functional impairment,whereas enucleation leads to less morbidity and preserves healthy parenchyma as well as exocrine and endocrine function.Enucleation of SPNs has been increasingly reported to be feasible and safe for preserving the normal physiological function of the pancreas,especially in teenagers and children.This review summarizes findings published in recent years on the enucleation of SPNs as well as potential future developments and directions.Enucleation has undoubtedly come to stay as an alternative surgical procedure for SPNs.However,many questions remain unresolved,and future directions toward the best surgical indication,the prevention and intervention of complications,especially pancreatic fistula,intraoperative resection margin safety assessment,and long-term oncology prognosis remain to be evaluated and should be explored in future clinical trials.
文摘Robotic system has been increasingly used in pancreatectomy. However, the effectiveness of this method remains uncertain. This study compared the surgical outcomes between robot-assisted laparoscopic distal pancreatectomy and conventional laparoscopic distal pancreatectomy. During a 15-year period, 35 patients underwent minimally invasive approach of distal pancreatectomy in our center. Seventeen of these patients had robot-assisted laparoscopic approach, and the remaining 18 had conventional laparoscopic approach. Their operative parameters and perioperative outcomes were analyzed retrospectively in a prospective database. The mean operating time in the robotic group (221.4 min) was significantly longer than that in the laparoscopic group (173.6 min) (P = 0.026). Both robotic and conventional laparoscopic groups presented no significant difference in spleen-preservation rate (52.9% vs. 38.9%) (P = 0.505), operative blood loss (100.3 ml vs. 268.3 ml) (P = 0.29), overall morbidity rate (47.1% vs. 38.9%) (P = 0.73), and post-operative hospital stay (11.4 days vs. 14.2 days) (P = 0.46). Both groups also showed no perioperative mortality. Similar outcomes were observed in robotic distal pancreatectomy and conventional laparoscopic approach. However, robotic approach tended to have the advantages of less blood loss and shorter hospital stay. Further studies are necessary to determine the clinical position of robotic distal pancreatectomy.