Histological and Immunohistochemical Studies of Furstenberg’s Rosette in Sheep and Goat

A total of twelve healthy adult Madras Red ewe and Boer local she-goat teats were histologically and immunohistochemically examined. In between the teat canal and teat cistern Furstenberg’s rosette was appeared as modified zone of mucosa thrown into primary and secondary folds. The mucosal folds were lined by a bilayered cuboidal epithelium. Subepithelial area of rosette was composed of numerous lymphocytes, polymorphonuclear leukocytes, macrophages and plasma cells. Mucosa below the Furstenberg’s rosette was lined by stratified squamous keratinized epithelium. Immunohistochemical staining of rosette by CD3 antibody revealed the localization of intraepithelial ‘T’ lymphocytes in the mucosal folds. ‘T’ lymphocytes were also localized in the lamina propria region

A Case of Multiple Liver Metastasis of True Gastric Leiomyosarcoma after Complete Surgical Resection

Primary leiomyosarcomas of the stomach are very rare tumors originating from mesenchymal tissues and account for only 1% of all malignant gastric neoplasm. We present here a case of primary gastric leiomyosarcoma in a 79-year-old man who presented with a 10 day history of epigastric pain and gastric subepithelial tumor. Endoscopic examination showed a 5 cm in diameter, subepithelial tumor located in the body of the stomach. Radiological investigations showed nonspecific findings except for the primary gastric lesion. Complete histological evaluation including immnuohistochemical staining after complete surgical resection revealed a true leiomyosarcoma of the stomach. One year later, the patient presented with dyspepsia. Endoscopic and radiological evaluation showed a recurrent leiomyosarcoma with multiple liver metastases. Our experience suggests that a careful clinical follow-up after surgical resection should be recommended in patients with gastric leiomyosarcomas because of their aggressive clinical behavior.

Immunohistochemical Analysis for p53 and TGF-beta Expression Pattern in Ovarian Epithelial Tumors / 대한산부인과학회잡지

OBJECTIVE: To verify the pattern of p53 and TGF-beta protein expression in benign and malignant epithelial ovarian tumors. METHODS: An immunohistochemical technique was applied to formalin-fixed paraffin-embedded samples of 22 benign and 9 malignant epithelial ovarian tumors using p53 monoclonal antibody and TGF-beta polyclonal antibody. Expressions of p53 and TGF-beta protein in two histological types were compared, and correlated with clinico-pathologic findings of the respective cases. RESULTS: p53 immunoreactivity of high or intermediate degree was detected in 2 out of 22 benign (9%) and 5 out of 9 malignant (55%) cases. On the other hand, intermediate to high TGF-beta expression was found in 17 out of 22 benign (77%), and 3 out of 9 malignant (33%) cases. The prevalence differences of p53 and TGF-beta expression between benign and malignant groups were statistically significant (p<0.05). In addition, the prevalence of immunoreactivities of p53 and TGF-beta in malignant tumor didn't show any association with age, tumor size, histologic types and stage. CONCLUSION: Our results suggest that p53 expression and loss of TGF-beta expression may play an important role in the malignant transformation of ovarian epithelial cells. However further studies seem to be necessary to know the exact relationship between their roles.

Expression of E-cadherin in Benign, Borderline, and Malignant Ovarian Epithelial Tumors / 대한산부인과학회잡지

OBJECTIVE: To investigate the expression of E-cadherin in benign, borderline, and malignant ovarian tumors. METHODS: An immunohistochemical technique was applied to formalin-fixed paraffin-embedded samples of 20 benign cystic ovarian tumors, 14 borderline ovarian tumors and 13 ovarian carcinomas. Expressions of E-cadherin immunostaining in three histological types were compared, and the survival rate in malignant ovarian cancer according to E-cadherin expression was also assessed. RESULTS: E-cadherin was positively or heterogeneously expressed in both benign and borderline ovarian tumors. But it was negatively, heterogeneously, or positively expressed in malignant ovarian tumors. The difference of expression of E-cadherin between borderline and malignant ovarian tumors was statisticaIly significant (p<0.05). In ovarian carcinoma, there was difference between negative and positive group in survival (p<0.05). CONCLUSION: Our results suggest that alterations in E-cadherin seem to occur at a later stage of the ovarian carcinogenesis, and may have some prognostic value in malignant ovarian tumor.

Comparison of NM23-H1/NDP Kinase and CD44v Expression in Human Skin Cancer : An Immunohistochemical Study / 대한해부학회지

Two isotypes of nm23 gene have been reported as multifunctional genes as well as CD44 gene. In tumor, both of genes, one isotype of human nm23, nm23-H1 and splice variants of surface glycoprotein CD44[CD44 v8-10], are correlated with tumor growth and metatastic potential[Keim et al., 1992 ; Dall et al., 1995]. However, the correlation of expression between these genes in tumor was not reported. In this immunohistochemical study on skin cancers, basal cell carcinoma, squamous cell carcinoma, and malignant melanoma, we intended to clarify the differences of expression on the basis of origins of skin tumors, basal cell, prickle cell, melanin producing cell, and compare the alterations of expressions between two genes in each tumor, respectively. The conclusion of this comparison is that relative parallel alteration in expressions between nm23-H1/NDP kinase and CD44 v8-10 was observed in basal cell carcinoma and malignant melanoma with inverse relation in differentiation. In squamous carcinoma, the expressions of two genes were much associated with differentiation. On the periphery of tumor, very low level of nm23-H1 protein and high level of CD44 v8-10 protein were detected.