Extramedullary Plasmacytoma of Breast.

Solitary plasmacytomas are more frequent in males than females. We are describing a solitary extramedullary plasmacytoma of the breast in a 50 year old woman on fine needle aspiration cytology and confirmed on histology. During 6 months of fallow up, no other involvement was detected in the bone marrow or in any other site. Extramedullary plasmacytoma occur in lymph node, lung, thyroid, gastrointestinal tract testis, and skin. Extramedullary plasmacytoma of breast is a rare lesion. Especially those are not associated with multipal myeloma. Most reported cases represent secondary involvement or initial manifestation of the multipal myeloma.