Plasmacytoma

Definition

Plasmacytoma is a localized mass of neoplastic monoclonal plasma cells that represents approximately 5% of all plasma cell neoplasms. There are two separate entities: primary plasmacytoma of the bone and extramedullary plasmacytoma of the soft tissues. Of the extramedullary plasmacytomas, 80% occur in the head and neck, usually in the upper respiratory tract. The median age at diagnosis is 50 years and the male to female ratio is 3:1. Long-term survival is possible following local radiotherapy, particularly for soft tissue presentations.

Also known as plasmacytoma — per MONDO

Also identified as

• DOID 3721 per MONDO
• ICD9 238.6 per MONDO
• MESH D010954 per MONDO
• NCIT C9349 per MONDO
• Orphanet 86855 per MONDO
• SCTID 415112005 per MONDO
• UMLS C0032131 per MONDO

Affected Organs