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WHO Classification of Tumours
Extraosseous plasmacytoma
Tumours of haematopoietic and lymphoid tissues


Definition

Extraosseous (extramedullary) plasma­cytomas are localized plasma cell neoplasms that arise in tissues other than bone. Lymphomas with prominent plasma­cytic differentiation, particularly extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue(MALT) must be excluded.

> Related Topics
Definition: Plasma cell neoplasms
Introduction: Classification of lymphoid neoplasms