The solitary plasmacytoma of the nasal cavity is one of the locations of extra-medullary plasmacytoma in the upper aerodigestive tract. The symptoms are nonspecific. We report a case of solitary plasmacytoma of the left nasal cavity, in a 46 year old patient with a straight nasal deformity and ipsilateral rhinorrhea bloody, biopsy and histologic study were diagnosed plasmacytoma. The negativity of the clinical examination confirmed the extramedullary form a nasal endo location. Through this

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... rvation and review of the literature we will try to show the clinical, biological and radiological expression of these plasmocytomas endonasaux and therapeutic modalities and monitoring.