plasmacytoma
Findings
No curated finding names plasmacytoma yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
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.
Definition from the Mondo Disease Ontology (MONDO:0005615), read 2026-09-29. CC BY 4.0.
Where it sits
- A kind of