From January 2008 to January 2013, 11 patients with central renal tumors underwent ultrasound-guided open nephron sparing surgery（ONSS） without renal artery occlusion. We removed the lesions, and the cut edges of th...From January 2008 to January 2013, 11 patients with central renal tumors underwent ultrasound-guided open nephron sparing surgery（ONSS） without renal artery occlusion. We removed the lesions, and the cut edges of the tumors were negative. Thus, we deduced that ultrasound-guided ONSS is suitable for the cases with obscure tumor boundary or multiple lesions. It could achieve the purpose of thoroughly removing lesions, as well as to expand the application range of nephron sparing surgery.展开更多
Objective：To investigate the method and effect of nephron-sparing surgery in the treatment of small renal cell carcinoma. Methods： From August 1 997 to October 2008, 48 cases of small renal cell carcinomas were conf...Objective：To investigate the method and effect of nephron-sparing surgery in the treatment of small renal cell carcinoma. Methods： From August 1 997 to October 2008, 48 cases of small renal cell carcinomas were confirmed by surgery and pathology, and reviewed retrospectively. Of the 48 cases, there was 1 patient with bilateral tumors, 8 with solitary kidney tumors, 1 with unilateral tumor and a damaged contralateral kidney, and 38 with unilateral tumors and a normal contralateral kidney; 9 underwent tumor enucleation and the remaining patients received partial nephrectomy. Results：There were no local tumor recurrences and/or tumor metastasis at a mean followup of 60 months. Conclusion： Confirming conclusions from other centers, we have found that nephron-sparing surgery is an effective treatment for small renal cell carcinomas.展开更多
Objective:The aim of the study was to report the experience of National Cancer Institute(NCI),Cairo University,Egypt,in managing various benign and malignant renal tumors with nephron sparing surgery(NSS),and to asses...Objective:The aim of the study was to report the experience of National Cancer Institute(NCI),Cairo University,Egypt,in managing various benign and malignant renal tumors with nephron sparing surgery(NSS),and to assess its safety and feasibility.Methods:Reviewing the literature for NSS,and records of patients who underwent NSS in the period from January 2000 to December 2009 at National Cancer Institute,Cairo University regarding the patient and tumor related characteristics,the indication for NSS,operative technique,postoperative complications,full histopathological data,and follow up results.Results:The total number of patients was 17.Mean age at surgery was 30.7 years(range 1.5-65 years).Five patients had bilateral tumors during surgery.The mean tumor size was 4.5 cm(range 1-9 cm).All patients had normal preoperative kidney functions.Seven patients had an absolute indication for NSS,6 patients had a relative indication,and 4 patients had an elective indication.All the 5 patients with bilateral tumors underwent bilateral simultaneous surgery.Cold ischemia was used in 8 patients,1 patient was exposed to warm ischemia,manual compression was used in 2 patients,and no vascular control was applied in 6 patients.Complications were encountered in 2 patients,one of them had urinary leakage which needed reoperation,and the other had subcutaneous hematoma which was treated conservatively.Histopathological analysis revealed Wilm's tumor(8 patients),angiomyolipoma(4 patients),renal cell carcinoma(4 patients),and hydatid cyst(1 patient).All patients had negative surgical margin.For patients with Wilm's tumor,the mean follow up was 21.4 months(range 0-94 months),2 patients had local recurrence,and 1 patient had distant metastasis.For patients with RCC,the mean follow up was 15.3 months(5-33 months),no patients had local recurrence or distant metastasis.All patients had normal kidney functions during postoperative and follow up periods.Conclusion:NSS is a feasible safe procedure that can be done with acceptable complications rate and it provides a good solution for patients with bilateral tumors,early localized renal cell carcinoma,and benign tumors.展开更多
Objective:Nephron-sparing surgery(NSS) for small renal masses offers a similar functional and oncological outcome to that of radical surgery.Laparoendoscopic single-site surgery(LESS) emerges as an advanced alternativ...Objective:Nephron-sparing surgery(NSS) for small renal masses offers a similar functional and oncological outcome to that of radical surgery.Laparoendoscopic single-site surgery(LESS) emerges as an advanced alternative for reduced invasiveness and improves cosmesis;LESS is developing quickly and its indications have been expanded,but still in its infancy.The aim of this paper is to report our preliminary experience in transumbilical LESS partial nephrectomy(LESS-PN),so as to assess its utility, safety and efficacy.Methods:From August 2009 to October 2010,3 patients underwent transumbilical LESS-PN via a novel multi-channel TriPort by a single experienced urologist in our institution.Patient demographics,perioperative and follow-up data were prospectively collected and analyzed.Results:All the three procedures were successfully completed.A 5-mm ancillary trocar was utilized in all 3 cases.The mean operative duration was 226.3(210-254 min) with an estimated blood loss of 56.7 ml (20-100 ml).Mean warm ischemia time was 35.7 min(19-48 min).One patient was transfused due to postoperative bleeding. The recovery was uneventful and mean length of postoperative stay was 13 days(12-14 days).At the latest follow-up,all patients remained symptom-free and had normal renal function without evidence of recurrence,and they were delighted for a hidden transumbilical scar.Conclusion:Transumbilical LESS-PN is a feasible and safe procedure albeit extremely technically challenging.Surgical outcomes at a median follow-up of 2 years are promising,while currently it should be reserved for highly selected patients with favorable tumor anatomy and performed by a very experienced laparoscopic surgeon.展开更多
Objective: To examine the effect of warm and cold ischemia on functions of the operated kidney in cases with a normal contralateral kidney undergoing nephron sparing surgery. Methods: This study enrolled 40 patients w...Objective: To examine the effect of warm and cold ischemia on functions of the operated kidney in cases with a normal contralateral kidney undergoing nephron sparing surgery. Methods: This study enrolled 40 patients with a normal contralateral kidney and without a renal function threatening risk factor, who were operated with NSS. The patients were randomized at admission. They were divided into 2 equal groups as warm and cold ischemia. An ice application for 10 minutes was done to cold ischemia group after clamping renal artery. Renal functions were evaluated with Technesium-99m-Dimercaptosuccinic Acid (DMSA) and serum creatinine at the preoperative and postoperative (day 1, day 15, month 6, and month 12) period. Statistical analysis was done with Mann Whitney U test, Wilcoxon Signed Rank test, and Fredman test. A p value below 0.05 was considered statistically significant. Results: There were no significant differences between the groups in terms of age, body mass index, ischemia time, tumor size, amount of hemorrhage, and procedure time. Both groups had a significantly higher DMSA uptake at the preoperative period compared with the postoperative period (postoperative day 1, day 15, month 6, and month 12) (p 0.001). However, both groups had similar DMSA uptake results at the postoperative period. Preoperative and postoperative creatinine levels were not significantly different from each other in both groups. Conclusion: Based on tumor localization, nephron sparing surgery without use of superficial cooling appears as a viable option for small renal masses.展开更多
AIM:To review an evolution of laparoscopic surgery,there has been a growing interest in laparoendoscopic single-site surgery(LESS).METHODS:A comprehensive electronic literature search was conducted using PubM ed datab...AIM:To review an evolution of laparoscopic surgery,there has been a growing interest in laparoendoscopic single-site surgery(LESS).METHODS:A comprehensive electronic literature search was conducted using PubM ed database to identify all publications relating to LESS-partial nephrectomy(PN).The research includes articles published from April 2008 to January 2014.We focused our attention only on articles in which were cited the single-site surgical technique(laparoscopic and robotic),tumour stage and grade,mean tumour size,intraoperative variables,blood loss and transfusion rate,length of postoperative stay and complication rates,Clavien classification,positive of surgical margins,pain assessment at discharge.RESULTS:A total of 9 studies were collected with 221patients included.The mean patients age was 62 years.The mean tumor size was 2.35 cm with a mean operative time of 181 min(range 111-270 min)and 58.3%were done by robot.The mean ischemia time was 23.6min.The 25.8%of patients underwent an unclamp LESS-PN.Mean estimated blood loss was 296 mL and median length of hospital stay was 4 d.The rate of severe post-operative complications(≥Clavien gradeⅢ)was 5.4%.Not all surgical series of LESS-PN or Robotic-LESS-PN shows conversion in Multiport Laparoscopic or Open Surgery.Regarding oncologic outcomes,surgical margins were positive 4%of patients(9/221),no distant or port-site metastases were recorded.CONCLUSION:LESS-PN and RLESS-PN are feasible and associated with reduced postoperative pain,shorter median hospital stay,shorter recovery time,and better cosmetic satisfaction without compromising surgical and oncological safety.展开更多
Background Current surgical practice for nephron sparing surgery allows at least 1 cm margin of normal tissue around the tumour. However, recent studies show that the width of the margin is not important, even simple ...Background Current surgical practice for nephron sparing surgery allows at least 1 cm margin of normal tissue around the tumour. However, recent studies show that the width of the margin is not important, even simple enucleation is as effective as partial nephrectomy. We explored whether margin size has significant impacts on clinical outcomes in nephron sparing surgery for renal cell carcinoma of 4 cm or less. Methods Between 1998 and 2006, 115 patients with sporadic, pathologically confirmed, renal cell carcinoma 4 cm or less （Tla） and normal contralateral kidney were treated by nephron sparing surgery using a margin less than 5 mm. The surgical margin status was evaluated from frozen and permanent paraffin sections. Results Mean and median tumour diameter were 3.3 cm and 3.5 cm （range 1.0-4.0）. The mean margin width was 2.2 mm （median 2.0, range 0-6）. In addition, 114 cases had margins 5 mm or less （99.1%）, 97 cases （84.3%） had margin 3 mm or less, and 26 cases had margin zero （22.6%）. None of the patients had positive surgical margins. No patients died during follow-up （mean 65 months）. There were no any major surgical complications and no distant metastasis was detected. Local recurrence was detected in one case （0.9%） at a different site of the kidney. Conclusions For early localized renal cell carcinoma of 4 cm or less, as long as tumour is completely excised, the size of margin in nephron sparing surgery is not important. Nephron sparing surgery with 5 mm margin is enough for tumour control. It provides excellent renal function preservation, favourable long term progression free survival and is not associated with an increased risk of local recurrence.展开更多
文摘From January 2008 to January 2013, 11 patients with central renal tumors underwent ultrasound-guided open nephron sparing surgery（ONSS） without renal artery occlusion. We removed the lesions, and the cut edges of the tumors were negative. Thus, we deduced that ultrasound-guided ONSS is suitable for the cases with obscure tumor boundary or multiple lesions. It could achieve the purpose of thoroughly removing lesions, as well as to expand the application range of nephron sparing surgery.
文摘Objective：To investigate the method and effect of nephron-sparing surgery in the treatment of small renal cell carcinoma. Methods： From August 1 997 to October 2008, 48 cases of small renal cell carcinomas were confirmed by surgery and pathology, and reviewed retrospectively. Of the 48 cases, there was 1 patient with bilateral tumors, 8 with solitary kidney tumors, 1 with unilateral tumor and a damaged contralateral kidney, and 38 with unilateral tumors and a normal contralateral kidney; 9 underwent tumor enucleation and the remaining patients received partial nephrectomy. Results：There were no local tumor recurrences and/or tumor metastasis at a mean followup of 60 months. Conclusion： Confirming conclusions from other centers, we have found that nephron-sparing surgery is an effective treatment for small renal cell carcinomas.
文摘Objective:The aim of the study was to report the experience of National Cancer Institute(NCI),Cairo University,Egypt,in managing various benign and malignant renal tumors with nephron sparing surgery(NSS),and to assess its safety and feasibility.Methods:Reviewing the literature for NSS,and records of patients who underwent NSS in the period from January 2000 to December 2009 at National Cancer Institute,Cairo University regarding the patient and tumor related characteristics,the indication for NSS,operative technique,postoperative complications,full histopathological data,and follow up results.Results:The total number of patients was 17.Mean age at surgery was 30.7 years(range 1.5-65 years).Five patients had bilateral tumors during surgery.The mean tumor size was 4.5 cm(range 1-9 cm).All patients had normal preoperative kidney functions.Seven patients had an absolute indication for NSS,6 patients had a relative indication,and 4 patients had an elective indication.All the 5 patients with bilateral tumors underwent bilateral simultaneous surgery.Cold ischemia was used in 8 patients,1 patient was exposed to warm ischemia,manual compression was used in 2 patients,and no vascular control was applied in 6 patients.Complications were encountered in 2 patients,one of them had urinary leakage which needed reoperation,and the other had subcutaneous hematoma which was treated conservatively.Histopathological analysis revealed Wilm's tumor(8 patients),angiomyolipoma(4 patients),renal cell carcinoma(4 patients),and hydatid cyst(1 patient).All patients had negative surgical margin.For patients with Wilm's tumor,the mean follow up was 21.4 months(range 0-94 months),2 patients had local recurrence,and 1 patient had distant metastasis.For patients with RCC,the mean follow up was 15.3 months(5-33 months),no patients had local recurrence or distant metastasis.All patients had normal kidney functions during postoperative and follow up periods.Conclusion:NSS is a feasible safe procedure that can be done with acceptable complications rate and it provides a good solution for patients with bilateral tumors,early localized renal cell carcinoma,and benign tumors.
基金Supported by the Military Major Project for Clinical High-tech and Innovative Technology of China(2010gxjs057)the Municipal Hospitals' Project for Emerging and Frontier Technology of Shanghai(SHDC12010115)the Project for the Key Discipline of Shanghai
文摘Objective:Nephron-sparing surgery(NSS) for small renal masses offers a similar functional and oncological outcome to that of radical surgery.Laparoendoscopic single-site surgery(LESS) emerges as an advanced alternative for reduced invasiveness and improves cosmesis;LESS is developing quickly and its indications have been expanded,but still in its infancy.The aim of this paper is to report our preliminary experience in transumbilical LESS partial nephrectomy(LESS-PN),so as to assess its utility, safety and efficacy.Methods:From August 2009 to October 2010,3 patients underwent transumbilical LESS-PN via a novel multi-channel TriPort by a single experienced urologist in our institution.Patient demographics,perioperative and follow-up data were prospectively collected and analyzed.Results:All the three procedures were successfully completed.A 5-mm ancillary trocar was utilized in all 3 cases.The mean operative duration was 226.3(210-254 min) with an estimated blood loss of 56.7 ml (20-100 ml).Mean warm ischemia time was 35.7 min(19-48 min).One patient was transfused due to postoperative bleeding. The recovery was uneventful and mean length of postoperative stay was 13 days(12-14 days).At the latest follow-up,all patients remained symptom-free and had normal renal function without evidence of recurrence,and they were delighted for a hidden transumbilical scar.Conclusion:Transumbilical LESS-PN is a feasible and safe procedure albeit extremely technically challenging.Surgical outcomes at a median follow-up of 2 years are promising,while currently it should be reserved for highly selected patients with favorable tumor anatomy and performed by a very experienced laparoscopic surgeon.
文摘Objective: To examine the effect of warm and cold ischemia on functions of the operated kidney in cases with a normal contralateral kidney undergoing nephron sparing surgery. Methods: This study enrolled 40 patients with a normal contralateral kidney and without a renal function threatening risk factor, who were operated with NSS. The patients were randomized at admission. They were divided into 2 equal groups as warm and cold ischemia. An ice application for 10 minutes was done to cold ischemia group after clamping renal artery. Renal functions were evaluated with Technesium-99m-Dimercaptosuccinic Acid (DMSA) and serum creatinine at the preoperative and postoperative (day 1, day 15, month 6, and month 12) period. Statistical analysis was done with Mann Whitney U test, Wilcoxon Signed Rank test, and Fredman test. A p value below 0.05 was considered statistically significant. Results: There were no significant differences between the groups in terms of age, body mass index, ischemia time, tumor size, amount of hemorrhage, and procedure time. Both groups had a significantly higher DMSA uptake at the preoperative period compared with the postoperative period (postoperative day 1, day 15, month 6, and month 12) (p 0.001). However, both groups had similar DMSA uptake results at the postoperative period. Preoperative and postoperative creatinine levels were not significantly different from each other in both groups. Conclusion: Based on tumor localization, nephron sparing surgery without use of superficial cooling appears as a viable option for small renal masses.
文摘AIM:To review an evolution of laparoscopic surgery,there has been a growing interest in laparoendoscopic single-site surgery(LESS).METHODS:A comprehensive electronic literature search was conducted using PubM ed database to identify all publications relating to LESS-partial nephrectomy(PN).The research includes articles published from April 2008 to January 2014.We focused our attention only on articles in which were cited the single-site surgical technique(laparoscopic and robotic),tumour stage and grade,mean tumour size,intraoperative variables,blood loss and transfusion rate,length of postoperative stay and complication rates,Clavien classification,positive of surgical margins,pain assessment at discharge.RESULTS:A total of 9 studies were collected with 221patients included.The mean patients age was 62 years.The mean tumor size was 2.35 cm with a mean operative time of 181 min(range 111-270 min)and 58.3%were done by robot.The mean ischemia time was 23.6min.The 25.8%of patients underwent an unclamp LESS-PN.Mean estimated blood loss was 296 mL and median length of hospital stay was 4 d.The rate of severe post-operative complications(≥Clavien gradeⅢ)was 5.4%.Not all surgical series of LESS-PN or Robotic-LESS-PN shows conversion in Multiport Laparoscopic or Open Surgery.Regarding oncologic outcomes,surgical margins were positive 4%of patients(9/221),no distant or port-site metastases were recorded.CONCLUSION:LESS-PN and RLESS-PN are feasible and associated with reduced postoperative pain,shorter median hospital stay,shorter recovery time,and better cosmetic satisfaction without compromising surgical and oncological safety.
文摘Background Current surgical practice for nephron sparing surgery allows at least 1 cm margin of normal tissue around the tumour. However, recent studies show that the width of the margin is not important, even simple enucleation is as effective as partial nephrectomy. We explored whether margin size has significant impacts on clinical outcomes in nephron sparing surgery for renal cell carcinoma of 4 cm or less. Methods Between 1998 and 2006, 115 patients with sporadic, pathologically confirmed, renal cell carcinoma 4 cm or less （Tla） and normal contralateral kidney were treated by nephron sparing surgery using a margin less than 5 mm. The surgical margin status was evaluated from frozen and permanent paraffin sections. Results Mean and median tumour diameter were 3.3 cm and 3.5 cm （range 1.0-4.0）. The mean margin width was 2.2 mm （median 2.0, range 0-6）. In addition, 114 cases had margins 5 mm or less （99.1%）, 97 cases （84.3%） had margin 3 mm or less, and 26 cases had margin zero （22.6%）. None of the patients had positive surgical margins. No patients died during follow-up （mean 65 months）. There were no any major surgical complications and no distant metastasis was detected. Local recurrence was detected in one case （0.9%） at a different site of the kidney. Conclusions For early localized renal cell carcinoma of 4 cm or less, as long as tumour is completely excised, the size of margin in nephron sparing surgery is not important. Nephron sparing surgery with 5 mm margin is enough for tumour control. It provides excellent renal function preservation, favourable long term progression free survival and is not associated with an increased risk of local recurrence.
