Sclerosing stromal tumor of the ovary

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Sclerosing stromal tumor of the ovary is a rare benign neoplasm. Usually regarded as nonfunctional, some of these tumors have been associated with endocrine manifestations that suggest steroid hormone production by the tumor. In this report, the ultrastrucural features of a typical sclerosing stromal tumor are analyzed. The electronoptic features of the neoplastic cells include abundant rough endoplasmic reticulum, prominent Golgi structures, and lipid droplets. Mitochondria had lamellar cristae, and smooth endoplasmic reticulum was sparse. These findings do not substantiate steroidogenic activity of the neoplastic cells in this case.



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