Paratesticular Neoplasm - A Case Report

Leiomyomas are benign tumours that arise from smooth muscle cells, from almost anywhere in the body. But, leiomyomas of the urinary tract and male genital tract are extremely rare. Tumours occurring in the paratesticular region may be clinically indistinguishable from testicular tumours, thus resulting in initial misdiagnosis. Most tumours of this region present as a scrotal swelling which may or may not be painful. Here is a case report of 76 year old male who presented with a painless scrotal swelling for one year. Ultrasonography of the testis showed features suggestive of testicular neoplasm with increased vascularity. High orchidectomy was performed. On histopathology, the diagnosis of paratesticular tumour was given. Van Giesons stain and Massons Trichrome stain showed smooth muscle differentiation. On immunohistochemistry the tumour was positive for Smooth muscle actin and Vimentin. This case report highlights the fact that both the pathologist and the clinician should be aware of this rare entity.