A Case of Ovarian Low-Grade Stromal Sarcoma with Thecomatous Features: So-Called

Lee, Chang Ik; Oh, Hyun Yang; Myong, Na Hye; Cho, Jeong Hee; Lee, Min Chul; Kim, Dong Hee; Koh, Kyung Sim; Park, Choong Hak

Case Report

Korean Journal of Obstetrics & Gynecology 1997;40(11):2613-2619.
Published online January 1, 2001.

A Case of Ovarian Low-Grade Stromal Sarcoma with Thecomatous Features: So-Called "Malignant Thecoma".

Chang Ik Lee, Hyun Yang Oh, Na Hye Myong, Jeong Hee Cho, Min Chul Lee, Dong Hee Kim, Kyung Sim Koh, Choong Hak Park

¹Department of Obstetrics and Gynecology, College of Medicine, Dankook University, Cheonan, Korea.
²Department of Anatomic Pathology, College of Medicine, Dankook University, Cheonan, Korea.
³Department of Anesthesiology, College of Medicine, Dankook University, Cheonan, Korea.

Abstract

Theca cell tumors of the ovary have been generally regarded as almost invariably benign neoplasms. Even though several case reports of the malignant variant of this tumor have appeared in the world literature, but the term "malignant thecoma" is controversial and doubtful. If a thecoma ever becomes malignant, the tumor cells dedifferentiate so that they can not be recognized any longer as theca cells: instead, they proliferate as a stromal sarcoma or fibrosarcoma. We have experienced a rare case of ovarian low-grade stromal sarcoma with thecomat ous features in a 66-year-old postmenopausal woman. The clinicopathologic finding and a review of literature on ovarian stromal sarcoma and malignant thecoma were described brie fly.

Key Words: Ovarian stromal sarcoma, Malignant thecoma