Rare extramedullary manifestations of multiple myeloma: a case series involving the thyroid, pleura, and skin

This article presents three rare cases of extramedullary plasmacytoma involving the thyroid, pleura, and skin in patients with multiple myeloma. Diagnosed via histopathology and immunohistochemistry, these cases demonstrate diverse clinical presentations. The authors emphasize maintaining high clinical suspicion for atypical tumors to ensure accurate diagnosis and manage this aggressive disease course.