Smooth muscle hyperplasia of the epididymis.

Benign smooth muscle cell proliferation commonly involves a variety of body organs, yet is a rare finding in the spermatic cord or paratesticular tissue of the male genital tract. Here we discuss a case of smooth muscle hyperplasia of the epididymis which presented as an intrascrotal mass. This is a very rare condition and should be considered in the differential diagnosis of any paratesticular mass.