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Plasmacytoma

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Updated August 24, 2010

Written or reviewed by a board-certified physician. See About.com's Medical Review Board.

Definition:

Plasmacytoma is a collection of plasma cells that have formed a tumor in the bone or in soft tissues outside of the bone marrow (extramedullary plasmacytoma). If there is only one bone tumor, it is called a solitary plasmacytoma.

Also Known As: extramedullary plasmacytoma, solitary plasmacytoma

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