Malignant Mixed Mesodermal Tumor of the Urinary Bladder: A Case Report and Literature Review

Ki Sook Hong, Woon Sup Han, Ok Kyung Kim

Corresponding author: Ok Kyung Kim. Department of Pathology, College of Medicine, Ewha Womans University, Korea.

Copyright ⓒ 1981. Ewha Womans University School of Medicine. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Published Online: Jul 24, 2015

Abstract

A malignant mixed mesodermal tumor of the bladder from 70-year-old woman is presented. Malignant mixed mesodermal tumor is a designation applied to carcinosarcoma characterized by the presence of heterologous mesenchymal elements. The tumor tends to be large, bulky, intraluminal tumors that grows rapidly and infiltrates widely. The tumor occurs predominantly in elderly men, and aggresive surgical treatment is indicated because of the poor prognosis. Histologically this neoplasm was composed of epithelial components of transitional and squamous cell carcinoma, and mesnechymal components of fibrosarcoma, chondrosarcoma, and osteogenic sarcoma.