title: A hole in the skull: CT manifestations of a solitary plasmacytoma in skull.
abstract: Plasmacytoma can present as multiple myeloma, solitary plasmacytoma of the bone (SPB), or extramedullary plasmacytoma. SPB is a rare entity that composes of malignant plasma cells and involves the bone to form only one or two lesions without evidence of disease dissemination. It accounts for only 4% of malignant plasma cell tumors. We report a case 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 with a well demarcated margin. A cake-like mass was revealed at CT soft tissue window. The mass was completely excised and histological examination revealed plasmacytoma. The diagnosis of SPB was established after ruling out multiple myeloma.
authors.affiliation: Department of Radiology, Shenzhen People's Hospital, Jinan University Second Clinical Medical College, Shenzhen, 518020, Guangdong Province, China.
authors.forename: Jing-Shan
authors.initials: JS
authors.lastname: Gong
authors.forename: Wen-Yan
authors.initials: WY
authors.lastname: Kang
authors.forename: Jin
authors.initials: J
authors.lastname: Zhu
authors.forename: Jian-Min
authors.initials: JM
authors.lastname: Xu