Plasmacytoma with oncocytic changes. A case report.

Abstract

In this report we will document a readily identifiable, morphologic variant of plasma cells in an extramedullary plasmacytoma. Ultrastructurally, the tumor cell cytoplasm was almost completely occupied by proliferating mitochondria. Localized areas of endoplasmic reticulum were, however, also noted. The light microscopic features of this tumor (i.e. foamy… (More)

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