A hole in the skull: CT manifestations of a solitary plasmacytoma in skull

[摘要] Plasmacytoma can present as multiple myeloma, solitary plasmacytoma of the bone (SPB), or extramedullaryplasmacytoma. SPB is a rare entity that composes of malignant plasma cells and involves the bone to form only one or twolesions without evidence of disease dissemination. It accounts for only 4% of malignant plasma cell tumors. We report acase of SPB in the skull in a 59-year-old male. CT scan revealed an 8 cm × 9 cm osteolytic lesion on the scalp of skull witha well demarcated margin. A cake-like mass was revealed at CT soft tissue window. The mass was completely excised andhistological examination revealed plasmacytoma. The diagnosis of SPB was established after ruling out multiple myeloma.

[学科分类] 外科医学

[关键词] Plasmacytoma;multiple myeloma;solitary plasmacytoma of the bone;extramedullary plasmacytoma;skull