Sclerosing stromal tumor is a rare, benign, sex cord stromal tumor of the ovary. We report a case of extragonadal sclerosing stromal tumor in a 45-year-old woman who presented with menstrual irregularity and vague pelvic pain. Imaging studies showed a well-defined mass between the posterior wall of the bladder and uterus, suspected of being a pedunculated leiomyoma. The histopathological and immunohistochemical study was consistent with sclerosing stromal tumor. No ovarian tissue was found on representative sectioning. This is the first case of sclerosing stromal tumor in an extragonadal location.
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