漿細胞瘤(plasmacytoma)是起源自漿細胞(plasmacell)的一種惡性腫瘤。可分成侵犯多處骨幣的 多發性骨髓瘤(multiplemyeloma) 、僅犯單一骨幣的孤立性漿細胞瘤(Solitaryplasmacytoma)及發生於 軟組織的髓外漿細胞瘤(extramedullary plasmacytoma) 0發生在報骨的孤立性漿細胞瘤極為罕見O本 文報告一個因為拔牙後發生異常流血而發現的下頓骨孤立性漿細胞瘤病例o( J. Family Dent. 3(2): 42-45， 2008)

Plasmacytoma is a malignant tumor derived from plasma cells. Plasmacytoma have different types:

multiple myeloma attacking multiple bones， Solitary plasmacytoma localized to one bone only and extramedullary plasmacytoma arises within the soft tissues. Solitary plasmacytoma arises in the mandible is rarely seen. The article reports a case of solitary plasmacytoma of the mandible found due to massive bleeding after tooth extraction. ( J. Family Dent. 3(2): 42-45， 2008 )