Objective To evaluate the clinical and pathological features of Riedel's thyroiditis(RT),and current diagnostic and treatment methods for that disease.Methods Five RT cases identified by surgery and pathological e...Objective To evaluate the clinical and pathological features of Riedel's thyroiditis(RT),and current diagnostic and treatment methods for that disease.Methods Five RT cases identified by surgery and pathological examinations at Peking Union Medical College Hospital from 1985 to 2009 were analyzed and compared with the cases reported in the literature in terms of clinical and pathological features.Immunohistochemical staining of kappa and lambda light chains was carried out for RT tissues from all the five patients.Results All the five cases were females,aged 45-55 years.Elevation of serum thyroid autoantibodies was found in only one patient,who had longer disease duration than the others.Pathological examination revealed invasive fibrosclerosis of the thyroid follicles,thyroid capsule,and the surrounding tissues.In RT tissues,the number of cells containing lambda chains was a little higher than those containing kappa chains.Conclusions RT is a rare disease which might be more common in middle-aged females than in other populations.Pathological features include the destruction of thyroid follicle,extension into surrounding tissues by inflammatory cells and fibrous tissues.Immunohistochemical staining of kappa and lambda chains could help diagnose RT.展开更多
Objective： The aim of this study was to investigate the clinicopathologic features of gastric adenoma. Methods： Sixty-seven cases of adenoma diagnosis of gastric biopsy specimens using light microscopy, immunohistoc...Objective： The aim of this study was to investigate the clinicopathologic features of gastric adenoma. Methods： Sixty-seven cases of adenoma diagnosis of gastric biopsy specimens using light microscopy, immunohistochemistry, and follow-up methods were studied. Results： Histopathology of gastric adenoma characteristics： nuclear anaplasia, showing increase of nuclear volume and irregular, and the emergence of one or more nucleoli, mitotic ≤ 2/10 high power field （HPF）. Structural changes in the gland： adenoma of the duct much more consistent, sometimes the size of the gland and irregular contour, might be associated with intestinal metaplasia. Increased significantly when the nuclear volume, mitotic 〉 2/10 HPF, irregular gland distortion, branched structures, suggesting the development of adenomas. Immunophenotype： tumor-associated carbohydrate antigens had a higher expression; adenomatous polyposis coli gene （APC） and carcinoembryonic antigen （CEA） expression of closely related with the formation of adenoma. Mucin muc-2 high expression was negatively correlated with muc-1 low expression, the combination of both can help to determine the development and changes in gastric adenoma. Survivin, Bcl-2, p21 and p53 protein expression rare cases, four were combined with the malignant transformation of gastric adenoma was important discriminant. Ki-67 positive cells 20%-40%, and could be used as degree of cell proliferation, a reference indicator of prognosis. Thirty-six to 49 months of follow-up results showed that cured 44.8% （30/67）, there adenomatous hyperplasia 35.8% （24167）, with the development of dysplasia showed 14.4% （11/67）, the development of intramucosal carci- noma were 3.0% （2/67）. Conclusion： Gastric adenomas occur significantly increased nuclear volume, mitotic 〉 2/10 HPF, ir- regular gland distortion, branch-like structure; immunohistochemical staining showed positive expression of muc-2 decreased, muc-1 positive expression; cell proliferation index Ki -67 〉 40%; p21, p53 protein expression occurred, suggesting a tendency to cancer, endoscopic mucosal resection should be as soon as possible.展开更多
AIM： To investigate the expressions of leptin and per- oxisome proliferator-activated receptor y （PPARG） in relation to body mass index （BMI）. METHODS： We evaluated leptin and PPARG expres- sion in 30 adenomas o...AIM： To investigate the expressions of leptin and per- oxisome proliferator-activated receptor y （PPARG） in relation to body mass index （BMI）. METHODS： We evaluated leptin and PPARG expres- sion in 30 adenomas over 1 cm in size by immunohisto- chemical staining. In addition, clinicopathologic features including BMI were assessed. RESULTS： PPARG and leptin expression showed a strong positive correlation （P = 0.035）. The average BMI of the leptin-positive group was higher than that of the leptin-negative group （25.4 ＋ 3.4 kg/m2 vs 22.6 ＋ 2.4 kg/m2, P = 0.018）, and leptin expression was sig- nificantly correlated with high BMI （P = 0.024）. Leptinexpression was more frequently observed in intermedi- ate/high grade dysplasia than in low grade dysplasia （P = 0.030）. However, PPARG expression was not cor- related with BMI and grade of dysplasia. CONCLUSION： BMI has influenced on the leptin ex- pression of colorectal adenoma. The exact mechanism underlies the strong correlation between leptin and PPARG expression needs further study.展开更多
Objective Primary malignant melanomas of the liver are exceedingly rare.Only 19 cases have been reported in the literature worldwide.In this report,we describe our pathological findings and review the literature in or...Objective Primary malignant melanomas of the liver are exceedingly rare.Only 19 cases have been reported in the literature worldwide.In this report,we describe our pathological findings and review the literature in order to improve our understanding of the disease and prevent misdiagnosis,as well as provide evidence for its treatment and prognosis.Methods We present a case of an isolated malignant melanoma of the liver in a 61-year-old male Chinese patient.Results Comprehensive dermatological and ophthalmological examinations did not reveal any evidence of a primary cutaneous or ocular lesion.Similarly,serial physical examinations,auxiliary examinations,and bone scans did not demonstrate any other lesions in the brain,respiratory tract,and gastrointestinal tract.Microscopic examination of the resected specimen revealed malignant melanoma,which was confirmed by immunohistochemical staining for S-100 protein(+),ki67(30%+),EMA(+),CD10(+),and HMB-45(++).Conclusion Primary malignant melanoma may occur in the liver,and should be considered when the histopathological appearance is atypical of other hepatic neoplasms.The diagnostic criteria for hepatic malignant melanoma depend mainly on the clinical,radiographic,and histopathological findings.Pathomorphology and immumohistochemical staining can be utilized to confirm the diagnosis.展开更多
Objective： The aim of this study was to study the clinicopathological and immunohistochemical features of pilo- myxoid astrocytoma （PMA）. Methods： The clinical and pathologic features in six cases of PMA were anal...Objective： The aim of this study was to study the clinicopathological and immunohistochemical features of pilo- myxoid astrocytoma （PMA）. Methods： The clinical and pathologic features in six cases of PMA were analyzed. Immunohisto- chemical staining for glial fibrillary acidic protein （GFAP）, synaptophysin （Syn）, Chromogranin A （CgA）, cytokeratin （AEI/AE3）, epithelial membrane antigen （EMA） and Ki67 was performed on paraffin-embedded sections. Results： Among the six cases, five occurred in female patients, one was male, the age at diagnosis ranged from 2 to 15 years. Four cases were located in the hypothalamic area and optic pathway, one case in the third ventricle, and one case in left parietal lobe. On imaging, PMAs often appears as well-circumscribed mass. Microscopically, the tumor was composed of monomorphous bipolar （piloid） cells setting in a prominent myxoid background with an angiocentric radiating growth pattern in some areas. PMA lacked biphasic pattern, Rosenthal fibers and eosinophilic granular bodies which were usually typical in a classic pilocytic astrocytoma （PA）. Immunohistochemcal study showed that the tumor cells were diffusely positive for GFAP. Syn positive staining was observed in one case. The Ki67 labeling index measured less than 5%. Conclusion： PMA is a distinct aggressive variant of pilocytic astrocytoma with special histological and immunohistochemical features. It is typically a rare tumor of early childhood. Im- munohistochemical staining for GFAP and Syn is helpful in differential diagnosis.展开更多
文摘Objective To evaluate the clinical and pathological features of Riedel's thyroiditis(RT),and current diagnostic and treatment methods for that disease.Methods Five RT cases identified by surgery and pathological examinations at Peking Union Medical College Hospital from 1985 to 2009 were analyzed and compared with the cases reported in the literature in terms of clinical and pathological features.Immunohistochemical staining of kappa and lambda light chains was carried out for RT tissues from all the five patients.Results All the five cases were females,aged 45-55 years.Elevation of serum thyroid autoantibodies was found in only one patient,who had longer disease duration than the others.Pathological examination revealed invasive fibrosclerosis of the thyroid follicles,thyroid capsule,and the surrounding tissues.In RT tissues,the number of cells containing lambda chains was a little higher than those containing kappa chains.Conclusions RT is a rare disease which might be more common in middle-aged females than in other populations.Pathological features include the destruction of thyroid follicle,extension into surrounding tissues by inflammatory cells and fibrous tissues.Immunohistochemical staining of kappa and lambda chains could help diagnose RT.
文摘Objective： The aim of this study was to investigate the clinicopathologic features of gastric adenoma. Methods： Sixty-seven cases of adenoma diagnosis of gastric biopsy specimens using light microscopy, immunohistochemistry, and follow-up methods were studied. Results： Histopathology of gastric adenoma characteristics： nuclear anaplasia, showing increase of nuclear volume and irregular, and the emergence of one or more nucleoli, mitotic ≤ 2/10 high power field （HPF）. Structural changes in the gland： adenoma of the duct much more consistent, sometimes the size of the gland and irregular contour, might be associated with intestinal metaplasia. Increased significantly when the nuclear volume, mitotic 〉 2/10 HPF, irregular gland distortion, branched structures, suggesting the development of adenomas. Immunophenotype： tumor-associated carbohydrate antigens had a higher expression; adenomatous polyposis coli gene （APC） and carcinoembryonic antigen （CEA） expression of closely related with the formation of adenoma. Mucin muc-2 high expression was negatively correlated with muc-1 low expression, the combination of both can help to determine the development and changes in gastric adenoma. Survivin, Bcl-2, p21 and p53 protein expression rare cases, four were combined with the malignant transformation of gastric adenoma was important discriminant. Ki-67 positive cells 20%-40%, and could be used as degree of cell proliferation, a reference indicator of prognosis. Thirty-six to 49 months of follow-up results showed that cured 44.8% （30/67）, there adenomatous hyperplasia 35.8% （24167）, with the development of dysplasia showed 14.4% （11/67）, the development of intramucosal carci- noma were 3.0% （2/67）. Conclusion： Gastric adenomas occur significantly increased nuclear volume, mitotic 〉 2/10 HPF, ir- regular gland distortion, branch-like structure; immunohistochemical staining showed positive expression of muc-2 decreased, muc-1 positive expression; cell proliferation index Ki -67 〉 40%; p21, p53 protein expression occurred, suggesting a tendency to cancer, endoscopic mucosal resection should be as soon as possible.
基金Supported by Grant from Inje University College of Medicine(2010)
文摘AIM： To investigate the expressions of leptin and per- oxisome proliferator-activated receptor y （PPARG） in relation to body mass index （BMI）. METHODS： We evaluated leptin and PPARG expres- sion in 30 adenomas over 1 cm in size by immunohisto- chemical staining. In addition, clinicopathologic features including BMI were assessed. RESULTS： PPARG and leptin expression showed a strong positive correlation （P = 0.035）. The average BMI of the leptin-positive group was higher than that of the leptin-negative group （25.4 ＋ 3.4 kg/m2 vs 22.6 ＋ 2.4 kg/m2, P = 0.018）, and leptin expression was sig- nificantly correlated with high BMI （P = 0.024）. Leptinexpression was more frequently observed in intermedi- ate/high grade dysplasia than in low grade dysplasia （P = 0.030）. However, PPARG expression was not cor- related with BMI and grade of dysplasia. CONCLUSION： BMI has influenced on the leptin ex- pression of colorectal adenoma. The exact mechanism underlies the strong correlation between leptin and PPARG expression needs further study.
文摘Objective Primary malignant melanomas of the liver are exceedingly rare.Only 19 cases have been reported in the literature worldwide.In this report,we describe our pathological findings and review the literature in order to improve our understanding of the disease and prevent misdiagnosis,as well as provide evidence for its treatment and prognosis.Methods We present a case of an isolated malignant melanoma of the liver in a 61-year-old male Chinese patient.Results Comprehensive dermatological and ophthalmological examinations did not reveal any evidence of a primary cutaneous or ocular lesion.Similarly,serial physical examinations,auxiliary examinations,and bone scans did not demonstrate any other lesions in the brain,respiratory tract,and gastrointestinal tract.Microscopic examination of the resected specimen revealed malignant melanoma,which was confirmed by immunohistochemical staining for S-100 protein(+),ki67(30%+),EMA(+),CD10(+),and HMB-45(++).Conclusion Primary malignant melanoma may occur in the liver,and should be considered when the histopathological appearance is atypical of other hepatic neoplasms.The diagnostic criteria for hepatic malignant melanoma depend mainly on the clinical,radiographic,and histopathological findings.Pathomorphology and immumohistochemical staining can be utilized to confirm the diagnosis.
文摘Objective： The aim of this study was to study the clinicopathological and immunohistochemical features of pilo- myxoid astrocytoma （PMA）. Methods： The clinical and pathologic features in six cases of PMA were analyzed. Immunohisto- chemical staining for glial fibrillary acidic protein （GFAP）, synaptophysin （Syn）, Chromogranin A （CgA）, cytokeratin （AEI/AE3）, epithelial membrane antigen （EMA） and Ki67 was performed on paraffin-embedded sections. Results： Among the six cases, five occurred in female patients, one was male, the age at diagnosis ranged from 2 to 15 years. Four cases were located in the hypothalamic area and optic pathway, one case in the third ventricle, and one case in left parietal lobe. On imaging, PMAs often appears as well-circumscribed mass. Microscopically, the tumor was composed of monomorphous bipolar （piloid） cells setting in a prominent myxoid background with an angiocentric radiating growth pattern in some areas. PMA lacked biphasic pattern, Rosenthal fibers and eosinophilic granular bodies which were usually typical in a classic pilocytic astrocytoma （PA）. Immunohistochemcal study showed that the tumor cells were diffusely positive for GFAP. Syn positive staining was observed in one case. The Ki67 labeling index measured less than 5%. Conclusion： PMA is a distinct aggressive variant of pilocytic astrocytoma with special histological and immunohistochemical features. It is typically a rare tumor of early childhood. Im- munohistochemical staining for GFAP and Syn is helpful in differential diagnosis.
