Intrascrotal and Extratesticular Multiple Schwannoma
A 67-year-old man presented with a 2-year history of multiple slowly growing painless lumps in the scrotum. He did not have any history of trauma or infection. His medical history was unremarkable. Physical examination revealed () multiple non-tender, hard lumps measuring about 1×1×1.5 cm at the extrascrotal mass and about 3.5×2.5×1.8 cm at the intrascrotal mass. Some lumps had invaded the penile root without penile deviation and without pain on erection. There were no enlarged inguinal nodes. The laboratory results, including complete blood counts, serum electrolytes, testicular tumor markers, and urinalysis, were within the normal range. Scrotal ultrasonography revealed intrascrotal and extratesticular masses in the mid-scrotal region (). Complete excision of the scrotal masses was performed. After surgery, there was no testicular invasion. The mass was firm and appeared to be grossly homogeneous. Immunohistochemically, the tumor cells were positive to S-100 and negative to SMA (). The pathologic diagnosis was schwannoma of the scrotum. There was no evidence of recurrence during 6 years of follow-up.