AIM： To investigate the expression of different cytokeratins （CKs） in gastric epithelium of adult patients with chronic gastritis infected with Helicobacter pylori （H pylon） cagA ＋ strains. METHODS： The express...AIM： To investigate the expression of different cytokeratins （CKs） in gastric epithelium of adult patients with chronic gastritis infected with Helicobacter pylori （H pylon） cagA ＋ strains. METHODS： The expression of CK 7, 8, 18, 19 and 20 was studied immunohistochemically in antral gastric biopsies of 84 patients. All the CKs were immunostained in cagA＋Hpylori gastritis （57 cases）, non-Hpylori gastritis （17 cases） and normal gastric mucosa （10 cases）. RESULTS： In cagA＋ H pylori gastritis, CK8 was expressed comparably to the normal antral mucosa from surface epithelium to deep glands. Distribution of CK18 and CK 19 was unchanged, i.e. transmucosal, but intensity of the expression was different in foveolar region in comparison to normal gastric mucosa. Cytokeratin 18 immunoreactivity was significantly higher in the foveolar epithelium of H pylori-positive gastritis compared to both Hpylori-negative gastritis and controls. On the contrary, decrease in CK19 immunoreactivity occurred in foveolar epithelium of H pylori-positive gastritis. In both normal and inflamed antral mucosa without Hpyloriinfection, CK20 was expressed stronglyl moderately and homogenously in surface epithelium and upper foveolar region, but in H pylod -induced gastritis significant decrease of expression in foveolar region was noted. Generally, in both normal antral mucosa and H pylori-negative gastritis, expression of CK7 was not observed, while in about half cagA＋ H pylori-infected patients, moderate focal CK7 immunoreactivity of the neck and coiled gland areas was registered, especially in areas with more severe inflammatory infiltrate. CONCLUSION： Alterations in expression of CK 7, 18, 19 and 20 together with normal expression of CK8 occur in antral mucosa of H pylori-associated chronic gastritis in adult patients infected with cagA＋ strains. Alterations in different cytokeratins expression might contribute to weakening of epithelial tight junctions observed in H pylori-infected gastric mucosa.展开更多
AIM： To investigate the roles of mucin histochemistry, cytokeratin 7/20 （CK7/20） immunoreactivity, clinical characteristics and endoscopy to distinguish short- segment Barrett＇s esophageal （SSBE） from cardiac in...AIM： To investigate the roles of mucin histochemistry, cytokeratin 7/20 （CK7/20） immunoreactivity, clinical characteristics and endoscopy to distinguish short- segment Barrett＇s esophageal （SSBE） from cardiac intestinal metaplasia （CIM）. METHODS： High iron diamine/Alcian blue （HID/AB） mucin-histochemical staining and immunohistochemical staining were used to classify intestinal metaplasia （IN） and to determine CK7/20 immunoreactivity pattern in SSBE and CIM, respectively, and these results were compared with endoscopical diagnosis and the positive rate of gastroesophageal reflux disease （GERD） symptoms and H pylori infection. Long-segment Barrett＇ s esophageal and IM of gastric antrum were designed as control. RESULTS： The prevalence of type III IM was significantly higher in SSBE than in CIM （63.33% vs 23.08%, P〈0.005）. The CK7/20 immunoreactivity in SSBE showed mainly Barrett＇s pattern （76.66%）, and the GERD symptoms in most cases which showed Barrett＇ s pattern were positive, whereas H pylori infection was negative. However, the CK7/20 immunoreactivity in CIM was gastric pattern preponderantly （61.54%）, but there were 23.08% cases that showed Barrett＇s pattern. H pylori infection in all cases which showed gastric pattern was significantly higher than those which showed Barrett＇ s pattern （63.83% vs 19.30%, P〈0.005）, whereas the GERD symptoms in gastric pattern were significantly lower than that in Barrett＇s pattern （21.28% vs 85.96%,P〈O.O05）. CONCLUSION： Distinction of SSBE from CIM should not be based on a single method; however, the combination of clinical characteristics, histology, mucin histochemistry, CK7/20 immunoreactivity, and endoscopic biopsy should be applied. Type III IM, presence of GERD symptoms, and Barrett＇s CK7/20 immunoreactivity pattern may support the diagnosis of SSBE, whereas non-type III IM, positive H pylori infection, and gastric CK7/20 immunoreactivity pattern may imply CIM.展开更多
Colonic metastasis from other organs is very rare.Here we report the case of a 62-year-old man with a history of pancreatoduodenectomy for stage IIB pancreatic head cancer performed seven years back.He presented with ...Colonic metastasis from other organs is very rare.Here we report the case of a 62-year-old man with a history of pancreatoduodenectomy for stage IIB pancreatic head cancer performed seven years back.He presented with abdominal distension and pain.Under the preoperative diagnosis of bowel obstruction,surgical treatment was performed,and a circumferential lesion causing bowel obstruction of the ascending colon was detected.A right hemicolectomy with lymph node dissection was performed.The specimen showed a 5-cm wall thickening with a cobble-stone like appearance of the ascending colon,which morphologically appeared scirrhous.Histological examination revealed cancer nests invading from the subserosa to the muscular and submucosal layers of the colon.Immunohistochemical analysis of the tumor cells demonstrated positive staining for cytokeratin 7,but negative for cytokeratin 20,which was the same as the previous pancreatic cancer specimen.These pathological and immunohistochemical features strongly supported the diagnosis of colonic metastasis from the pancreas.Thereafter,the patient received systemic chemotherapy,but unfortunately,he died 14 mo after the surgery.展开更多
A 75-year-old man was admitted to our hospital with a diagnosis of liver metastases from colon cancer. He underwent right hemicolectomy for cecal cancer eight years ago, and had a metastatic liver tumor in segment 8 ...A 75-year-old man was admitted to our hospital with a diagnosis of liver metastases from colon cancer. He underwent right hemicolectomy for cecal cancer eight years ago, and had a metastatic liver tumor in segment 8 （S8）, which was surgically resected about 4 years after the initial operation. Histopathological examination of the resected specimens from both operations revealed a well-differentiated adenocarcinoma with mucinous carcinoma. Four months after the second operation, computed tomography demonstrated a low-density lesion at the cut surface of the remnant liver. Although it was considered to be a postoperative collection of inflammatory fluid, it formed a cystic configuration and increased in size to approximately 5 cm in diameter. With a tentative diagnosis of a recurrence of metastatic cancer, partial hepatectomy of S8 was performed. Histological examination of the resected specimens also revealed mucinous adenocarci- noma, which had invaded into the biliary ducts, replacing and extending along its epithelium. Immunohistochemi-cally, the tumor cells were positive for cytokeratin （CK） 20, but negative for CK7. Therefore, the tumor was diagnosed as a metastatic adenocarcinoma from colonic cancer. Liver metastases of colorectal adenocarcinoma sometimes invade the Glisson＇s triad and grow along the biliary ducts.展开更多
Colorectal cancer (CRC) is significant publichealth problem in rich countries of the world, because of its frequency and mostly because of its severity. Our aim was to improve histologic diagnosis of malignancy with t...Colorectal cancer (CRC) is significant publichealth problem in rich countries of the world, because of its frequency and mostly because of its severity. Our aim was to improve histologic diagnosis of malignancy with topographic coloration (HE) and cytokeratins 7, 20 immuno-labeling. The risk for colorectal cancer incease with age, but in our series, 10% of colorectal cancer exist in patients younger than 40 years old. In histological study, adenocarcinoma represented 100% and the evaluation for stage of disease showed that the most dominant isstage IV (32.6%). In our trial, we found that cytokeratins 7 and 20 immunoreactivity in colorectal adenocarcinoma are often positive for cytokeratin-20 and most of time negative for cytokeratin-7.展开更多
基金Supported by a grant from Serbian Ministry for Science and Environmental Protection,No.1752
文摘AIM： To investigate the expression of different cytokeratins （CKs） in gastric epithelium of adult patients with chronic gastritis infected with Helicobacter pylori （H pylon） cagA ＋ strains. METHODS： The expression of CK 7, 8, 18, 19 and 20 was studied immunohistochemically in antral gastric biopsies of 84 patients. All the CKs were immunostained in cagA＋Hpylori gastritis （57 cases）, non-Hpylori gastritis （17 cases） and normal gastric mucosa （10 cases）. RESULTS： In cagA＋ H pylori gastritis, CK8 was expressed comparably to the normal antral mucosa from surface epithelium to deep glands. Distribution of CK18 and CK 19 was unchanged, i.e. transmucosal, but intensity of the expression was different in foveolar region in comparison to normal gastric mucosa. Cytokeratin 18 immunoreactivity was significantly higher in the foveolar epithelium of H pylori-positive gastritis compared to both Hpylori-negative gastritis and controls. On the contrary, decrease in CK19 immunoreactivity occurred in foveolar epithelium of H pylori-positive gastritis. In both normal and inflamed antral mucosa without Hpyloriinfection, CK20 was expressed stronglyl moderately and homogenously in surface epithelium and upper foveolar region, but in H pylod -induced gastritis significant decrease of expression in foveolar region was noted. Generally, in both normal antral mucosa and H pylori-negative gastritis, expression of CK7 was not observed, while in about half cagA＋ H pylori-infected patients, moderate focal CK7 immunoreactivity of the neck and coiled gland areas was registered, especially in areas with more severe inflammatory infiltrate. CONCLUSION： Alterations in expression of CK 7, 18, 19 and 20 together with normal expression of CK8 occur in antral mucosa of H pylori-associated chronic gastritis in adult patients infected with cagA＋ strains. Alterations in different cytokeratins expression might contribute to weakening of epithelial tight junctions observed in H pylori-infected gastric mucosa.
基金Supported by the grant from Clinical Key Project of the Healthy Congress, No. 20012130
文摘AIM： To investigate the roles of mucin histochemistry, cytokeratin 7/20 （CK7/20） immunoreactivity, clinical characteristics and endoscopy to distinguish short- segment Barrett＇s esophageal （SSBE） from cardiac intestinal metaplasia （CIM）. METHODS： High iron diamine/Alcian blue （HID/AB） mucin-histochemical staining and immunohistochemical staining were used to classify intestinal metaplasia （IN） and to determine CK7/20 immunoreactivity pattern in SSBE and CIM, respectively, and these results were compared with endoscopical diagnosis and the positive rate of gastroesophageal reflux disease （GERD） symptoms and H pylori infection. Long-segment Barrett＇ s esophageal and IM of gastric antrum were designed as control. RESULTS： The prevalence of type III IM was significantly higher in SSBE than in CIM （63.33% vs 23.08%, P〈0.005）. The CK7/20 immunoreactivity in SSBE showed mainly Barrett＇s pattern （76.66%）, and the GERD symptoms in most cases which showed Barrett＇ s pattern were positive, whereas H pylori infection was negative. However, the CK7/20 immunoreactivity in CIM was gastric pattern preponderantly （61.54%）, but there were 23.08% cases that showed Barrett＇s pattern. H pylori infection in all cases which showed gastric pattern was significantly higher than those which showed Barrett＇ s pattern （63.83% vs 19.30%, P〈0.005）, whereas the GERD symptoms in gastric pattern were significantly lower than that in Barrett＇s pattern （21.28% vs 85.96%,P〈O.O05）. CONCLUSION： Distinction of SSBE from CIM should not be based on a single method; however, the combination of clinical characteristics, histology, mucin histochemistry, CK7/20 immunoreactivity, and endoscopic biopsy should be applied. Type III IM, presence of GERD symptoms, and Barrett＇s CK7/20 immunoreactivity pattern may support the diagnosis of SSBE, whereas non-type III IM, positive H pylori infection, and gastric CK7/20 immunoreactivity pattern may imply CIM.
文摘Colonic metastasis from other organs is very rare.Here we report the case of a 62-year-old man with a history of pancreatoduodenectomy for stage IIB pancreatic head cancer performed seven years back.He presented with abdominal distension and pain.Under the preoperative diagnosis of bowel obstruction,surgical treatment was performed,and a circumferential lesion causing bowel obstruction of the ascending colon was detected.A right hemicolectomy with lymph node dissection was performed.The specimen showed a 5-cm wall thickening with a cobble-stone like appearance of the ascending colon,which morphologically appeared scirrhous.Histological examination revealed cancer nests invading from the subserosa to the muscular and submucosal layers of the colon.Immunohistochemical analysis of the tumor cells demonstrated positive staining for cytokeratin 7,but negative for cytokeratin 20,which was the same as the previous pancreatic cancer specimen.These pathological and immunohistochemical features strongly supported the diagnosis of colonic metastasis from the pancreas.Thereafter,the patient received systemic chemotherapy,but unfortunately,he died 14 mo after the surgery.
文摘A 75-year-old man was admitted to our hospital with a diagnosis of liver metastases from colon cancer. He underwent right hemicolectomy for cecal cancer eight years ago, and had a metastatic liver tumor in segment 8 （S8）, which was surgically resected about 4 years after the initial operation. Histopathological examination of the resected specimens from both operations revealed a well-differentiated adenocarcinoma with mucinous carcinoma. Four months after the second operation, computed tomography demonstrated a low-density lesion at the cut surface of the remnant liver. Although it was considered to be a postoperative collection of inflammatory fluid, it formed a cystic configuration and increased in size to approximately 5 cm in diameter. With a tentative diagnosis of a recurrence of metastatic cancer, partial hepatectomy of S8 was performed. Histological examination of the resected specimens also revealed mucinous adenocarci- noma, which had invaded into the biliary ducts, replacing and extending along its epithelium. Immunohistochemi-cally, the tumor cells were positive for cytokeratin （CK） 20, but negative for CK7. Therefore, the tumor was diagnosed as a metastatic adenocarcinoma from colonic cancer. Liver metastases of colorectal adenocarcinoma sometimes invade the Glisson＇s triad and grow along the biliary ducts.
文摘Colorectal cancer (CRC) is significant publichealth problem in rich countries of the world, because of its frequency and mostly because of its severity. Our aim was to improve histologic diagnosis of malignancy with topographic coloration (HE) and cytokeratins 7, 20 immuno-labeling. The risk for colorectal cancer incease with age, but in our series, 10% of colorectal cancer exist in patients younger than 40 years old. In histological study, adenocarcinoma represented 100% and the evaluation for stage of disease showed that the most dominant isstage IV (32.6%). In our trial, we found that cytokeratins 7 and 20 immunoreactivity in colorectal adenocarcinoma are often positive for cytokeratin-20 and most of time negative for cytokeratin-7.
