ABSTRACT
Steroid cell tumor, not otherwise specified (NOS), are rare ovarian tumor, in addition, it is more rare in children. The majority of these tumors produce several steroid hormones, particularly testosterone. Estrogen also secreted by steroid cell tumor, NOS, but it is uncommon. Furthermore, hypertension is an infrequent sign in steroid cell tumor, NOS. An 8.5-yr-old girl with hypertension and frequent vaginal spotting visited at our clinic. On laboratory evaluation, secondary hypertension due to an elevated plasma renin level and isosexual pseudoprecocious puberty was diagnosed. Right solid ovarian mass was detected in radiologic tests. She underwent a right ooporectomy and it revealed renin and progesterone receptor positive steroid cell tumor, NOS. After operation, her blood pressure returned to normal level and vaginal bleeding disappeared. Even though this case is very rare, when hypertension coincides with virilization or feminization, a renin-secreting ovarian steroid cell tumor, NOS, should be considered.
Subject(s)
Child , Female , Humans , Hypertension/etiology , Ovarian Neoplasms/complications , Puberty, Precocious/enzymology , Receptors, Cell Surface/metabolism , Receptors, Progesterone/metabolism , Renin/blood , Sex Cord-Gonadal Stromal Tumors/complications , Steroids/biosynthesis , Tomography, X-Ray Computed , Vacuolar Proton-Translocating ATPases/metabolismABSTRACT
Microcystic meningioma, a distinct morphological variant of meningiomas, is histologically characterized by a vacuolated appearance with multiple cystic spaces lined by vacuolated or stellate-shaped tumor cells. We report a case of microcystic meningioma occuring in right frontoparietal area of 42-year-old woman, with emphasis on differential diagnosis, along with a review of literatures. Immunohistochemically, most of the tumor cells demonstrated positive immunoreactivity for both epithelial membrane antigen and vimentin. Electron microscopy showed that the extracellular space was extensive, where eletron-lucent material was occasionally seen. The tumor cells had long cytoplasmic processes showing complex interdigitation and a large number of desmosomes.
Subject(s)
Female , Humans , Diagnosis, Differential , MeningiomaABSTRACT
To evaluate the expression of transforming growth factor-alpha(TGF-alpha) and proliferating cell nuclear antigen(PCNA) and its relation to the differentiation of the tumors, immunohistochemical studies were performed in 49 human gliomas. Tumors were graded by a 3-grade-system; grade I=low grade glioma, grade Il=anaplastic glioma, grade III=glioblastoma multiforme. TGF-A and PCNA were predominantly expressed in malignant gliomas compared with benign gliomas. Malignant gliomas revealed 87% TGF-A reactivity, while benign gliomas revealed 26% TGF-A reactivity. The proliferation index with PCNA was 26%+/-7%(mean+/-standard deviation) in malignant gliomas and 5%?% in benign gliomas. A strong positive correlation between tumor grade and extent of TGF-A and PCNA expression was found(P<0.0001, Chi square and P<0.002, T-test). Synchronous expression of TGF-A and PCNA was observed in 16 cases(33%). The results of this study support the suggestion that the expression of TGF-A might be a useful prognostic indicator in human gliomas.