plasmacytoma

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plasmacytoma (plaz-mă-sy-toh-mă) n. a malignant tumour of plasma cells, usually occurring as a single tumour in bone marrow or more rarely soft tissue (extramedullary p.) and often known as a ‘solitary myeloma’. However, it may be multiple, in which case it is classifed as a multiple myeloma.

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