Vaginal hemangiopericytoma: a histopathologic and ultrastructural evaluation.

The hemangiopericytoma is an uncommon stromovascular neoplasm that arises from the pericyte of Zimmerman. Since their original description in the female genital tract in 1954, the majority of these lesions have been of uterine origin. Presented is a clinicopathologic description of a hemangiopericytoma arising in the vagina and occupying the rectovaginal septum. Light and electron microscopic characterization is rendered. Current understanding of these lesions is reviewed and therapeutic options are discussed.