Squamous cell carcinoma of the rectum is a rare malignancy.It appears to be associated with chronic inflammatory conditions and infections.The clear association seen between Human Papilloma Virus and various squamous ...Squamous cell carcinoma of the rectum is a rare malignancy.It appears to be associated with chronic inflammatory conditions and infections.The clear association seen between Human Papilloma Virus and various squamous cancers has not been firmly established for the squamous cell cancer of the rectum. The presentation is nonspecific and patients tend to present with advanced stage disease.Diagnosis relies on endoscopic examination with biopsy of the lesion.Distinction from squamous cell cancer of the anus can be difficult,but can be facilitated by immunohistochemical staining for cytokeratins.Staging of the cancer with endoscopic ultrasound and computed tomography provides essential information on prognosis and can guide therapy.At present,surgery remains the main therapeutic option;however recent advances have made chemoradiation a valuable therapeutic addition. Squamous cell carcinoma of the rectum is a distinct entity and it is of crucial importance for the practicing Gastroenterologist to be thoroughly familiar with this disease.Compared to adenocarcinoma of the rectum and squamous cell cancer of the anal canal,squamous cell carcinoma of the rectum has different epidemiology, etiology,pathogenesis,and prognosis but,most importantly,requires a different therapeutic approach. This review will examine and summarize the available information regarding this disease from the perspective of the practicing gastroenterologist.展开更多
AIM: To investigate the incidence of clinically detected port-site metastasis (PSM) in patients who underwent robotic surgery for biliary malignancies. METHODS: Using a prospective database, the patients undergoin...AIM: To investigate the incidence of clinically detected port-site metastasis (PSM) in patients who underwent robotic surgery for biliary malignancies. METHODS: Using a prospective database, the patients undergoing fully robotic surgery for biliary malignan- cies between January 2009 and January 2011 were in- cluded. Records of patients with confirmed malignancy were reviewed for clinicopathological data and informa- tion about PSM. RESULTS: Sixty-four patients with biliary tract cancers underwent robotic surgery, and sixty patients met the inclusion criteria. The median age was 67 year (range: 40-85 year). During a median 15-mo follow-up period, two female patients were detected solitary PSM after robotic surgery. The incidence of PSM was 3.3%. Pa- tient 1 underwent robotic anatomatic left hemihepa- tectomy and extraction of biliary tumor thrombi for an Klatskin tumor. She had a subcutaneous mass located at the right lateral abdominal wall near a trocar scar. Patient 2 underwent robotic pancreaticoduodenectomy for distal biliary cancer. She had two metachronous subcutaneous mass situated at the right lateral abdomi- nal wall under a same trocar scar at 7 and 26 mo. The pathology of the excised PSM masses confirmed meta- static biliary adenocarcinoma. CONCLUSION: The incidence of PSIVls after robotic surgery for biliary malignancies is relatively low, and biliary cancer can be an indication of robotic surgery.展开更多
To get a better understanding of the location,pathophysiology,etiology and prognosis of multiple malignant tumors (MPMT),we evaluated the medical records of 22 patients with MPMT.Our results suggested that radiotherap...To get a better understanding of the location,pathophysiology,etiology and prognosis of multiple malignant tumors (MPMT),we evaluated the medical records of 22 patients with MPMT.Our results suggested that radiotherapy and chemotherapy might play an important role in the pathogenesis of MPMT and follow up is important in detecting a secondary primary malignant tumor (PMT) at an early stage.Surgical removal of tumors is the first choice therapy for MPMT.展开更多
AIM: To investigate the expression of vascular endothelial growth factor (VEGF) and microvascular density (MVD) count in pediatric malignant liver tumor and their clinical significances. METHODS: Fourteen children wit...AIM: To investigate the expression of vascular endothelial growth factor (VEGF) and microvascular density (MVD) count in pediatric malignant liver tumor and their clinical significances. METHODS: Fourteen children with malignant liver tumors including seven hepatocellular carcinomas (HCCs), five hepatoblastomas, one malignant mesenchymoma and one rhabdomyosarcoma were studied. Twelve adult HCC samples served as control group. All samples were examined with streptavidin-biotin peroxidase (SP) immunohistochemical staining for VEGF expression and MVD count. RESULTS: VEGF positive expression in all pediatric malignant liver tumors was significantly higher than that in adult HCC (0.4971±0.14 vs0.4027±0.03, P<0.05). VEGF expression in pediatric HCC group was also markedly higher than that in adult HCC group (0.5665±0.10 vs0.4027±0.03, P<0.01) and pediatric non-HCC group (0.5665±0.10 vs 0.4276±0.15, P<0.05). The mean value of MVD in pediatric malignant liver tumors was significantly higher than that in adult HCC (33.66±12.24 vs 26.52±4.38, P<0.05). Furthermore, MVD in pediatric HCC group was significantly higher compared to that in adult HCC group (36.94±9.28 vs 26.52±4.38, P<0.05), but there was no significant difference compared to the pediatric non-HCC group (36.94±9.28 vs 30.37±14.61, P>0.05). All 7 children in HCC group died within 2 years, whereas the prognosis in pediatric non-HCC group was better, in which two patients survived more than 5 years. CONCLUSION: Children with malignant liver tumors, especially with HCC, may have extensive angiogenesis that induces a rapid tumor growth and leads to a poor prognosis.展开更多
The term biloma describes an encapsulated collection of bile within the abdomen, usually secondary to bile duct disruption. The commonest causes reported in the literature are iatrogenic (secondary to hepatobUiary su...The term biloma describes an encapsulated collection of bile within the abdomen, usually secondary to bile duct disruption. The commonest causes reported in the literature are iatrogenic (secondary to hepatobUiary surgery), trauma or complications due to choledocho- lithiasis. A few cases have been reported as complica- tions of cholangiocarcinoma or acute cholecystitis. We report the case of a 64-year-old man initially diagnosed with a non-obstructive malignancy of the pancreas, who developed a spontaneous intrahepatic biloma 8 mo later. This was identified following a 1-wk history of fever, rigors and icterus. The biloma was identified on computed tomography and subsequently drained under ultrasound guidance. Forty-eight hours later, a stent was inserted endoscopically into his common bile duct and he made an uneventful in-hospital recovery. We believe this is the first documented case of spontaneous intrahepatic biloma to occur secondary to pancreatic malignancy.展开更多
AIM: To evaluate the clinicopathologic characteristics of patients with metastases to the gallbladder (MGBs). METHODS: We performed a single-center retrospective study of 20 patients with MGBs diagnosed pathologic...AIM: To evaluate the clinicopathologic characteristics of patients with metastases to the gallbladder (MGBs). METHODS: We performed a single-center retrospective study of 20 patients with MGBs diagnosed pathologically from 1999 to 2007. RESULTS: Among 417 gallbladder (GB) malignancies, 20 (4.8%) were MGBs. The primary malignancies originated from the stomach (n = 8), colorectum (n = 3), liver (n = 2), kidney (n = 2), skin (n = 2), extrahepatic bile duct (n = 1), uterine cervix (n = 1), and appendix (n = 1). Twelve patients were diagnosed metachronously, presenting with cholecystitis (n = 4), abdominal pain (n = 2), jaundice (n = 1), weight loss (n = 1), and serum CA 19-9 elevation (n = 1); five patients were asymptomatic. The median survival after the diagnosis of MGB was 8.7 mo. On Cox regression analysis, R0 resection was the only factor associated with a prolonged survival [hazard ratio (HR): 0.01, P = 0.002]; presentation with cholecystitis was associated with poor survival (HR: 463.27, P = 0.006). CONCLUSION: MGBs accounted for 4.8% of all pathologically diagnosed GB malignancies. The most common origin was the stomach. The median survival of MGI3 was 8.7 mo.展开更多
We read with interest the article entitled: ‘Jejuno-jejunal invagination due to intestinal melanoma’ by Resta , et al. They reported a rare clinical case of a young woman with a bleeding jejunal melanoma, whose ear...We read with interest the article entitled: ‘Jejuno-jejunal invagination due to intestinal melanoma’ by Resta , et al. They reported a rare clinical case of a young woman with a bleeding jejunal melanoma, whose early clinical presentation was an intestinal invagination. The article is also referred to the rarity of gastrointestinal melanomas as well as their possible primary nature.展开更多
OBJECTIVE To demonstrate the effects of an inherited predisposition to familial esophageal squamous cell carcinoma (ESCC) through the comparison and analysis of the clinicopathologic differences between familial and...OBJECTIVE To demonstrate the effects of an inherited predisposition to familial esophageal squamous cell carcinoma (ESCC) through the comparison and analysis of the clinicopathologic differences between familial and sporadic ESCC cases. METHODS Differences in age of onset, prevalence rates of double primary ESCC, and survival rates between familial ESCC (n = 476) and sporadic ESCC cases (n = 1226) were analyzed. RESULTS Overall, familial ESCC cases showed a significantly younger age of onset (51.9±8.2 vs. 53.4 ±8.0, Pt.test = 0.00), a significantly higher prevalence rate for double ESCC (2.73 % vs. 1.22%, adjusted with TNM:χMH2 = 4.029, P = 0.045), and a lower survival rate than in sporadic cases (Pwald = 0.04). The familial cases showed both a younger age of onset and poorer survival in most subgroups, and the differences were more marked in early-stage rather than in the .late-stage disease groups. CONCLUSION Theses findings confirm the existence of familial as opposed to sporadic ESCC. By the theory of the "two-hit" origin of cancer, these findings also suggest that the "first hit", a genetic predisposition, can affect the age of onset, number of primary carcinomas, and the prognosis for familial ESCC patients.展开更多
Breast cancer is one of the most commonly diagnosed malignancies and the leading cause of cancer death of women over the world. A large number of females with breast cancer in Vietnam and other Southeast Asian(SEA) co...Breast cancer is one of the most commonly diagnosed malignancies and the leading cause of cancer death of women over the world. A large number of females with breast cancer in Vietnam and other Southeast Asian(SEA) countries present at an early age with more aggressive tumors compared with women in Australia. Despite experiencing a low incidence rate, the increasing incidence rate among SEA countries exceeds that of the Westernized world. Changes in reproductive factors, environmental exposures, and lifestyle are the possible causes of this trend. However, limited evidence shows that these factors are associated with breast cancer in the Vietnamese population. Breast cancer incidence rates within Vietnam are not uniform and appear to be dependent on geographic location. Findings from this review have important implications for breast cancer control and treatment in Vietnam. A good understanding of the morphology of the breast and the type and nature of breast cancers presenting in Vietnam is required to facilitate the introduction of an effective national breast screening program.展开更多
Helicobacter pylori(H pylori),a gastric pathogen,is a major cause of chronic gastritis and peptic ulcer disease,and is an important risk factor for the development of gastric malignancies.Culture of the bacterium from...Helicobacter pylori(H pylori),a gastric pathogen,is a major cause of chronic gastritis and peptic ulcer disease,and is an important risk factor for the development of gastric malignancies.Culture of the bacterium from gastric biopsy is essential for the determination of drug resistance of H pylori.However,the isolation rates of H pylori from infected individuals vary from 23.5%to 97% due to a number of factors such as biopsy preparation,cultural environment,medium and the method adopted.In the present case,we found that a prolonged incubation period of up to 19 d allowed successful isolation of H pylori from a patient who received triple therapy that failed to eradicate the bacterium.展开更多
文摘Squamous cell carcinoma of the rectum is a rare malignancy.It appears to be associated with chronic inflammatory conditions and infections.The clear association seen between Human Papilloma Virus and various squamous cancers has not been firmly established for the squamous cell cancer of the rectum. The presentation is nonspecific and patients tend to present with advanced stage disease.Diagnosis relies on endoscopic examination with biopsy of the lesion.Distinction from squamous cell cancer of the anus can be difficult,but can be facilitated by immunohistochemical staining for cytokeratins.Staging of the cancer with endoscopic ultrasound and computed tomography provides essential information on prognosis and can guide therapy.At present,surgery remains the main therapeutic option;however recent advances have made chemoradiation a valuable therapeutic addition. Squamous cell carcinoma of the rectum is a distinct entity and it is of crucial importance for the practicing Gastroenterologist to be thoroughly familiar with this disease.Compared to adenocarcinoma of the rectum and squamous cell cancer of the anal canal,squamous cell carcinoma of the rectum has different epidemiology, etiology,pathogenesis,and prognosis but,most importantly,requires a different therapeutic approach. This review will examine and summarize the available information regarding this disease from the perspective of the practicing gastroenterologist.
基金Supported by Eleven-five Special Subject of PLA Medicine and Health,No.08Z016
文摘AIM: To investigate the incidence of clinically detected port-site metastasis (PSM) in patients who underwent robotic surgery for biliary malignancies. METHODS: Using a prospective database, the patients undergoing fully robotic surgery for biliary malignan- cies between January 2009 and January 2011 were in- cluded. Records of patients with confirmed malignancy were reviewed for clinicopathological data and informa- tion about PSM. RESULTS: Sixty-four patients with biliary tract cancers underwent robotic surgery, and sixty patients met the inclusion criteria. The median age was 67 year (range: 40-85 year). During a median 15-mo follow-up period, two female patients were detected solitary PSM after robotic surgery. The incidence of PSM was 3.3%. Pa- tient 1 underwent robotic anatomatic left hemihepa- tectomy and extraction of biliary tumor thrombi for an Klatskin tumor. She had a subcutaneous mass located at the right lateral abdominal wall near a trocar scar. Patient 2 underwent robotic pancreaticoduodenectomy for distal biliary cancer. She had two metachronous subcutaneous mass situated at the right lateral abdomi- nal wall under a same trocar scar at 7 and 26 mo. The pathology of the excised PSM masses confirmed meta- static biliary adenocarcinoma. CONCLUSION: The incidence of PSIVls after robotic surgery for biliary malignancies is relatively low, and biliary cancer can be an indication of robotic surgery.
文摘To get a better understanding of the location,pathophysiology,etiology and prognosis of multiple malignant tumors (MPMT),we evaluated the medical records of 22 patients with MPMT.Our results suggested that radiotherapy and chemotherapy might play an important role in the pathogenesis of MPMT and follow up is important in detecting a secondary primary malignant tumor (PMT) at an early stage.Surgical removal of tumors is the first choice therapy for MPMT.
文摘AIM: To investigate the expression of vascular endothelial growth factor (VEGF) and microvascular density (MVD) count in pediatric malignant liver tumor and their clinical significances. METHODS: Fourteen children with malignant liver tumors including seven hepatocellular carcinomas (HCCs), five hepatoblastomas, one malignant mesenchymoma and one rhabdomyosarcoma were studied. Twelve adult HCC samples served as control group. All samples were examined with streptavidin-biotin peroxidase (SP) immunohistochemical staining for VEGF expression and MVD count. RESULTS: VEGF positive expression in all pediatric malignant liver tumors was significantly higher than that in adult HCC (0.4971±0.14 vs0.4027±0.03, P<0.05). VEGF expression in pediatric HCC group was also markedly higher than that in adult HCC group (0.5665±0.10 vs0.4027±0.03, P<0.01) and pediatric non-HCC group (0.5665±0.10 vs 0.4276±0.15, P<0.05). The mean value of MVD in pediatric malignant liver tumors was significantly higher than that in adult HCC (33.66±12.24 vs 26.52±4.38, P<0.05). Furthermore, MVD in pediatric HCC group was significantly higher compared to that in adult HCC group (36.94±9.28 vs 26.52±4.38, P<0.05), but there was no significant difference compared to the pediatric non-HCC group (36.94±9.28 vs 30.37±14.61, P>0.05). All 7 children in HCC group died within 2 years, whereas the prognosis in pediatric non-HCC group was better, in which two patients survived more than 5 years. CONCLUSION: Children with malignant liver tumors, especially with HCC, may have extensive angiogenesis that induces a rapid tumor growth and leads to a poor prognosis.
文摘The term biloma describes an encapsulated collection of bile within the abdomen, usually secondary to bile duct disruption. The commonest causes reported in the literature are iatrogenic (secondary to hepatobUiary surgery), trauma or complications due to choledocho- lithiasis. A few cases have been reported as complica- tions of cholangiocarcinoma or acute cholecystitis. We report the case of a 64-year-old man initially diagnosed with a non-obstructive malignancy of the pancreas, who developed a spontaneous intrahepatic biloma 8 mo later. This was identified following a 1-wk history of fever, rigors and icterus. The biloma was identified on computed tomography and subsequently drained under ultrasound guidance. Forty-eight hours later, a stent was inserted endoscopically into his common bile duct and he made an uneventful in-hospital recovery. We believe this is the first documented case of spontaneous intrahepatic biloma to occur secondary to pancreatic malignancy.
文摘AIM: To evaluate the clinicopathologic characteristics of patients with metastases to the gallbladder (MGBs). METHODS: We performed a single-center retrospective study of 20 patients with MGBs diagnosed pathologically from 1999 to 2007. RESULTS: Among 417 gallbladder (GB) malignancies, 20 (4.8%) were MGBs. The primary malignancies originated from the stomach (n = 8), colorectum (n = 3), liver (n = 2), kidney (n = 2), skin (n = 2), extrahepatic bile duct (n = 1), uterine cervix (n = 1), and appendix (n = 1). Twelve patients were diagnosed metachronously, presenting with cholecystitis (n = 4), abdominal pain (n = 2), jaundice (n = 1), weight loss (n = 1), and serum CA 19-9 elevation (n = 1); five patients were asymptomatic. The median survival after the diagnosis of MGB was 8.7 mo. On Cox regression analysis, R0 resection was the only factor associated with a prolonged survival [hazard ratio (HR): 0.01, P = 0.002]; presentation with cholecystitis was associated with poor survival (HR: 463.27, P = 0.006). CONCLUSION: MGBs accounted for 4.8% of all pathologically diagnosed GB malignancies. The most common origin was the stomach. The median survival of MGI3 was 8.7 mo.
文摘We read with interest the article entitled: ‘Jejuno-jejunal invagination due to intestinal melanoma’ by Resta , et al. They reported a rare clinical case of a young woman with a bleeding jejunal melanoma, whose early clinical presentation was an intestinal invagination. The article is also referred to the rarity of gastrointestinal melanomas as well as their possible primary nature.
基金supported by grants from the National Scientific Support Program during the Eleventh Five-year Period (No.2006BAI02A0)the Hebei Provincial Program for the Subjects with High Scholarship and Creative Research Potential in Ordinary Colleges and Universities+1 种基金the Natural Scientific Foundation of Hebei Province (No.C2005000797)the International Science and Technology Cooperation Item of Hebei Province (No.09396105D).
文摘OBJECTIVE To demonstrate the effects of an inherited predisposition to familial esophageal squamous cell carcinoma (ESCC) through the comparison and analysis of the clinicopathologic differences between familial and sporadic ESCC cases. METHODS Differences in age of onset, prevalence rates of double primary ESCC, and survival rates between familial ESCC (n = 476) and sporadic ESCC cases (n = 1226) were analyzed. RESULTS Overall, familial ESCC cases showed a significantly younger age of onset (51.9±8.2 vs. 53.4 ±8.0, Pt.test = 0.00), a significantly higher prevalence rate for double ESCC (2.73 % vs. 1.22%, adjusted with TNM:χMH2 = 4.029, P = 0.045), and a lower survival rate than in sporadic cases (Pwald = 0.04). The familial cases showed both a younger age of onset and poorer survival in most subgroups, and the differences were more marked in early-stage rather than in the .late-stage disease groups. CONCLUSION Theses findings confirm the existence of familial as opposed to sporadic ESCC. By the theory of the "two-hit" origin of cancer, these findings also suggest that the "first hit", a genetic predisposition, can affect the age of onset, number of primary carcinomas, and the prognosis for familial ESCC patients.
文摘Breast cancer is one of the most commonly diagnosed malignancies and the leading cause of cancer death of women over the world. A large number of females with breast cancer in Vietnam and other Southeast Asian(SEA) countries present at an early age with more aggressive tumors compared with women in Australia. Despite experiencing a low incidence rate, the increasing incidence rate among SEA countries exceeds that of the Westernized world. Changes in reproductive factors, environmental exposures, and lifestyle are the possible causes of this trend. However, limited evidence shows that these factors are associated with breast cancer in the Vietnamese population. Breast cancer incidence rates within Vietnam are not uniform and appear to be dependent on geographic location. Findings from this review have important implications for breast cancer control and treatment in Vietnam. A good understanding of the morphology of the breast and the type and nature of breast cancers presenting in Vietnam is required to facilitate the introduction of an effective national breast screening program.
基金Supported by The Grant"Research of the Helicobacter pylori gene engineering vaccine"from Hi-tech research and development(863)program of China,Grant No.2001AA21516102National Science and Technology Infrastructure Program,Grant No.2007BAI04B02
文摘Helicobacter pylori(H pylori),a gastric pathogen,is a major cause of chronic gastritis and peptic ulcer disease,and is an important risk factor for the development of gastric malignancies.Culture of the bacterium from gastric biopsy is essential for the determination of drug resistance of H pylori.However,the isolation rates of H pylori from infected individuals vary from 23.5%to 97% due to a number of factors such as biopsy preparation,cultural environment,medium and the method adopted.In the present case,we found that a prolonged incubation period of up to 19 d allowed successful isolation of H pylori from a patient who received triple therapy that failed to eradicate the bacterium.