A Case of Multiple Myeloma with Extramedullary Plasmacytoma Involving the Testis and Pleura at the Time of Initial Diagnos

초록

Extramedullary plasmacytoma (EMP) is defined as extra-osseous proliferation of neoplastic plasma cells in multiple myeloma (MM). A 55-year-old man presented with painless swelling of his left testis. Chest imaging showed plaque-like pleural thickening in the right hemithorax, and bone imaging revealed multiple sites of bony involvement. Left orchiectomy and pleural biopsy were performed and the histologic assessment revealed a diagnosis of EMP. Although testes and pleura are rarely involved in MM, the possibility of testicular or pleural EMP should be considered when a patient with MM presents with testicular swelling or a chest imaging abnormality.

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