Unusual presentation of adult granulosa cell tumor. A case report and review of the literature.

Extraovarian adult granulosa cell tumor is a very uncommon neoplasm, which probably arises from the ectopic gonadal tissue along the embryonic root of the genital ridge. We report a new and rare case of an extraovarian adult granulosa cell tumor occurring in a 66-year-old woman who was presented with severe abdominal pain focused on the left iliac fossa. The immunohistopathology confirmed the diagnosis of a paratubal adult granulosa cell tumor. This paper illustrates the histogenetic origin of granulosa cell tumor, its clinicopathological and immunohistochemical features.