Table of Contents Author Guidelines Submit a Manuscript
Case Reports in Urology
Volume 2014 (2014), Article ID 841929, 3 pages
Case Report

Intrascrotal Dedifferentiated Leiomyosarcoma Originating from Dartos Muscle

Department of Urology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan

Received 5 September 2014; Revised 26 November 2014; Accepted 26 November 2014; Published 11 December 2014

Academic Editor: Giorgio Carmignani

Copyright © 2014 Taro Teshima et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A 46-year-old man, who had visited our hospital complaining of a small intrascrotal nodule ten years ago, returned to us because of the rapid growth of the nodule. Computed tomography revealed a heterogeneously enhanced intrascrotal tumor of approximately  cm. The tumor and the right testis were excised with the adhered right scrotal skin. The pathological diagnosis was pleomorphic leiomyosarcoma with dedifferentiation originating from the dartos muscle. Urological dedifferentiated leiomyosarcomas are rarely reported and the clinical features are mostly unknown. This is the first report to describe the dedifferentiated leiomyosarcoma of the dartos muscle.