Rabdomiosarcoma Embrionario Uterino: Aspectos Morfológicos e Inmunohistoquímicos

Abstract

SUMMARY: Uterine sarcomas are relatively rare. The most common histological type is leiomyosarcoma, followed by endometrial stromal sarcoma. The rhabdomyosarcoma (RMS) are malignant neoplasms with skeletal muscle differentiation. Embryonal rhabdomyosarcoma (RMSE) type botryoides is the most common in childhood, with few reports in adults, affecting the head and neck region, genitourinary tract and extremities more frequently. In the genitourinary tract, the vagina is the most common location, rarely involving cervix and fundus uterine. Clinical and morphological characteristics are presented of a case of uterine RMSE diagnosed in a 58 year-old woman in the Pathology Unit of the Hernán Henríquez Aravena Hospital in Temuco.