Case report: testicular secondary localization of a multiple myeloma

Plasmacytoma of the testis in a patient with relapsed and refractory multiple myeloma: Case report and review of the literature

Testicular plasmacytoma, whether occurring as a primary lesion or as a reflection of underlying multiple myeloma (MM), is a rare disease. We report the case of a 38-year-old male with multiply relapsed MM, who was found to have a testicular plasmacytoma. He presented with a gradually enlarging scrotal mass. Following orchidectomy, pathologic examination of the specimen demonstrated a plasmacytoma. In the context of active MM, the specimen was also sent for cytogenetic analysis but this was unhelpful in guiding a chemotherapy regime, which still continues at time of reporting. Although a rare lesion, there remains no definitive treatment protocol for the management of testicular plasmacytoma representing an extramedullary manifestation of MM.

Primary plasma cell leukemia followed by testicular plasmacytoma

Plasma cell leukemia (PCL) is a highly aggressive plasma cell disease characterized by a poor prognosis and a low response rate to conventional therapy. Herein, we describe a 69-year-old patient with primary PCL, developing testicular disease while in complete hematological remission, following by muscle involvement and peritoneal dissemination.

[Testicular localisation of a plasmocytoma]

Testicular plasmocytomas are rare neoplasias that may occur as isolated tumors or in concomitance with a multiple myeloma. We report the case of a 47-year-old man with previous history of multiple myeloma. He presented with persistant fever and right testicular mass which was confirmed by scrotal sonography examination. A right orchiectomy was performed. The histological examination showed a plasmocytoma and immunohistochemical stains revealed monoclonal light chain lambda in tumor cells.