Teshima Taro, Takahashi Sayuri, Nagamoto Shoichi, Miyazaki Hideyo, Nakagawa Tohru, Fujimura Tetsuya, Fukuhara Hiroshi, Kume Haruki, Homma Yukio
Department of Urology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
Case Rep Urol. 2014;2014:841929. doi: 10.1155/2014/841929. Epub 2014 Dec 11.
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 4 × 3 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.
一名46岁男性，10年前因阴囊内小结节来我院就诊，现因结节迅速增大再次前来。计算机断层扫描显示阴囊内有一个大小约为4×3 cm的不均匀强化肿瘤。将肿瘤及右侧睾丸连同粘连的右侧阴囊皮肤一并切除。病理诊断为源于肉膜肌的多形性去分化平滑肌肉瘤。泌尿外科去分化平滑肌肉瘤鲜有报道，其临床特征大多未知。本文首次报道肉膜肌去分化平滑肌肉瘤。
