Bilateral Testicular Plasmacytomas

Abstract

Intratesticular masses are common and widely presumed to be malignant until proven otherwise. The most common testicular tumors include germ cell and non-germ cell tumors, typically presenting as solitary, unilateral lesions. Some testicular tumors present with bilateral involvement, the most common of which is Leydig cell hyperplasia, with case reports of other synchronous and metachronous bilateral testicular tumors in the literature. Testicular plasmacytomas in the setting of multiple myeloma have been reported as well but are uncommon. Bilateral testicular plasmacytomas are extremely rare. We present sonographic features, with histopathologic correlation in a 71-year-old man who presented with scrotal pain and was found to have bilateral testicular hypoechoic masses confirmed to be plasmacytomas.