Cytodiagnosis of extramedullary plasmacytoma

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Extramedullary plasmacytoma is a rare malignancy constituting 3-5% of all plasma cell malignancies. Nearly 80% occurs in the upper autodigestive tract, while other sites include gastrointestinal tract, lymph node, bladder, CNS, breast, thyroid, testis, parotid and skin. The utility of FNAC in the diagnosis of plasmacytoma has only been elaborated in few cases to date.A 50 years old man presented to our hospital with a mass on the chest wall measuring 3x2x2cms for one month. A cytological diagnosis of plasmacytoma was made which was confirmed on histopathology.