Abstract

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• Primary soft tissue sarcomas of the genitourinary tract are rarely seen, especially in the seminal vesicle. While sarcomas have been reported in the seminal vesicle, this is the first report of a smooth muscle neoplasm, of uncertain malignant potential, involving the seminal vesicle. The finding was incidental, following robotic-assisted radical retropubic prostatectomy for prostate cancer. To our knowledge, this is also the first report of a primary seminal vesicle tumor found following radical prostatectomy. A clinical case review and a brief review of the literature are presented.