Sclerosing stromal cell tumor of the ovary in pregnancy: a case report.

A rare case of benign ovarian stromal cell tumor during pregnancy is presented. Because of a rapidly growing solid ovarian mass, 6 x 7 cm in diameter, a 21-year-old woman at 14 weeks of gestation was explored via laparotomy. Histopathological diagnosis was sclerosing stromal tumor of the ovary. She had no complaint of menstrual irregularities before pregnancy and there was no clinical or hormonal evidence of active androgenic hormone secretion. Immunohistochemical staining showed positive vimentin, smooth-muscle actin and desmin reactions. Sclerosing stromal tumor is a very rare condition in pregnancy and our case is only the eighth case detected during pregnancy according to the literature.