Extramedullary plasmacytom (EMP) is an uncommon neoplastic disorder arising from B-cell series lymphocytes and comprises 3% of plasma cell neoplasms. Ninety percent of the cases are encountered in the head and neck region. In the present case, an EMP involving the maxillary sinus was reported in a 26 years old woman presenting with epistaxis complaint. EMP should be included in the differential diagnosis in patients with history of epistaxis.
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