Humans ; Soft Tissue Neoplasms ; diagnosis

Purpose To investigate the expression of TAZ and β-catenin in colorectal carcinoma and to analyze their correlation with the clinical pathological features of colorectal carcinoma. Methods The immunohistochemical method was used to detect the expres-sion of TAZ and β-catenin in 168 colorectal carcinoma specimens and 30 normal colorectal mucosal specimens. Results The positive rate of TAZ expression was significantly higher in colorectal carcinoma than that in normal colorectal mucosal (P<0. 01). The ectopic expression ofβ-catenin was significantly higher in colorectal carcinoma than that in normal colorectal mucosa (P<0. 01). The expres-sion of TAZ was correlated with degree of differentiation, lymph node metastasis, invasion depth and TNM stages (P<0. 05), and that of β-catenin was correlated with lymph node metastasis, invasion depth and TNM stages (P<0. 05). The positive expression of TAZ and the ectopic expression of β-catenin were significantly related to the 5-years survival rate ( P<0. 05 ) . The expression of TAZ was significantly positively correlated with the ectopic expression of β-catenin ( P<0. 01 ) . Conclusion Up-regulated expression of TAZ and ectopic expression of β-catenin may be synergistically involved in the occurrence, invasion and metastasis of colorectal carcinoma.

Pathogenesis and development of gastric carcinoma is a complicated process of polygene action. In recent years, it was recognized that the genes with relation to pathogenesis and development of gastric carcinoma include proto oncogenes, suppress genes and apoptosis gene. The three sorts of genes correlate with molecular pathology process of gastric carcinoma in various periods, and it certainly appears rules. The detection of some gastric carcinoma related genes are important in early diagnosis and prognosis of the tumor.

Purpose To study the diagnostic value of imprint cytology and to improve the accuracy of the rapid diagnosis of sentinel lymph node (SLN) during the operation of breast cancer.Methods 169 SLNs during 67 operations of breast cancer were detected by both frozen section and imprint cytology, and the results were compared with the histopathological diagnosis of permanent sections.Results Of 169 SLNs, 163 cases were diagnosed correctly with frozen section (163/169, 96.45%); 162 cases were diagnosed correctly with imprint cytology (162/169,95.86%);and 166 cases were diagnosed correctly by combination of imprint cytology and frozen section (166/169,98.22%).Conclusions Combination of imprint cytology and frozen section could increase the accuracy of the rapid diagnosis of SLN in breast cancinoma operation.

Purpose:To investigate the correlation between the expression of gene protein of c-fos,bcl-2 and gastric cancer and to provide the evidence of molecular pathology for grouping and early diagnosis.Methods:The expressions of gene-protein of c-fos,bcl-2 of the resected specimen of 54 patients with gastric carcinoma were detected by immunohistochemical method of S-P.All of the data were input into computer by system of Excel and SAS for statistical analysis.Results:The expressions of gene protein of c-fos,bcl-2 in intestinal type of gastric carcinoma were significantly higher than those in diffuse type (P=0.012, 0.0001, respectively).The expressions of gene protein of c-fos ,bcl-2 in the group of lymphaden metastasis were higher than that in the group of no lymphaden metastasis (c-fos 63.64%,54.55%;bcl-2 50.00%,27.27%), but no statistical significance.The expressions of c-fos , bcl-2 in atypical hyperplasia tissue nearby carcinoma and high differentiated carcinoma were stronger.Conclusions:The expressions of gene protein of c-fos,bcl-2 in intestinal type of gastric carcinoma were significantly higher than those in diffuse type.It showed that the pathogenesis of gastric carcinoma have difference between the intestinal type and diffuse type and it maybe provide proofs for gastric carcinoma grouping.The expression of c-fos,bcl-2 can be used as the molecular pathological symbols for early diagnosis.

Cerebellar Neoplasms ; pathology ; Hemangioblastoma ; pathology ; Humans

Purpose　To study the pathological characteristics, diagnostic criteria and differential diagnoses of the lymph node marginal zone B-cell lymphoma (LMZL), for the clinical treatment and prognosis. Methods　Histopathology and immunohistochemistry(ABC method) were used in ten cases of LMZL. Results　There were six male and four female. Lymphadenopathy was the main symptom in all of the cases, of which none had hepatosplenomegaly and abnormal lymphocytes in the peripheral blood. Two of them were marginal zone type, four nodular type, two diffuse type and two blastic type morphologically. Five of them were central cell like (CCL) type, six monocytic B-cell (MBC), two of them lymphoplasmacytic and two blastic histopathologically. Immunophenotyping was done in ten cases and supported the diagnosis. Conclusions　LMZL and MALT-type lymphoma have similar appearance, immunophenotype and cell origin. Based on the structural features, LMZL is a special entity.

Gene Rearrangement ; Humans ; RNA-Binding Protein EWS ; genetics ; Soft Tissue Neoplasms ; genetics

Purpose To explore the clinicopathologic characteristics, pathologic diagnosis and differential diagnosis of extraskeletal myxiod chondrosarcoma. Methods The clinical and pathological features were studied with HE and immunohistochemical staining in 5 cases of extraskeletal myxoid chondrosarcoma, and the related literatures were also reviewed. Results Extraskeletal myxoid chondro-sarcoma was male predominance (4 males: 1 female), and the age ranged from 32 to 62 years with an average of 52 years. Four tumors occurred in thigh and another in chest. Histologically, the neophlasm were composed of round and oval cells. Immunohisto-chemically, the tumor cells were positive for vimentin in five cases, synaptophysin expressed in one case, S-100 showed focal positivity in two cases, but negative for CK, p63, EMA, CD34, SMA in all cases. Molecular genetics detection shows chromosome exchange be-tween number 9 and 22. Conclusion Extraskeletal myxoid chondrosarcoma is a rare tumor which has no special characteristics in clinical and iconography, and its diagnosis mainly depends on the histopathologic features, immunohistochemistry and molecular genet-ics. Extraskeletal myxoid chondrosarcoma grows slowly, but have a high tendency for local recurrence and metastases.

Objective To study the radiological,clinicopathological features and prognosis of metanephric adenoma.Methods Two cases were selected,which underwent partial and radical renal resection.Examined the microscopic,immunohistochemical and radiological features of 2 metanephric adenoma cases.All patients were examined by ultrasound,CT and magnetic resonance imaging.Results They were lack of blood supply in imaging examination.The tumor cells were uniform with few eosinophilic cytoplasm.The chromatin is exquisite and lack pathological mitotic figure.The tumor cells were arranged in small tube or alveolar and locally showed papillary hyperplasia.Sometimes psammoma bodies were shown..Metanephric adenoma showed positive to Vimentin and CK.Conclusions Metanephric adenoma is a rare renal tumor mostly occur in single renal.And its morphological characteristic is diversity,so it's easy being misdiagnosed as malignant tumor.The pathologists should be careful and have the concept of metanephric adenoma when diagnosis.