Extramedullary plasmacytoma of the testicle.

OBJECTIVE: We present the case of a patient diagnosed with a testicular extramedullary plasmacytoma (EMP), and perform a brief review of the literature of this pathology.

METHODS: A 64 year-old male patient, with history of multiple myeloma successfully treated three years before, presented with left testicular swelling. Initial work-up was compatible with a testicular tumor and radical inguinal orchiectomy was performed.

RESULTS: Histologic examination of the testis revealed extensive intertubular infiltration by CD138 and CD56 atypical plasma cells, with diffuse staining for IgA, compatible with EMP.

CONCLUSIONS: Invasion of the testis in multiple myeloma patients as a recurrence of the disease is an extremely rare condition, as EMPs are more common in other organ systems. Initial treatment should be the same as a primary testicular tumor with radical inguinal orchiectomy, and definitive diagnosis is established in histologic analysis.