Extramedullary plasmacytomas are a rare entity. They represent less than 1% of malignant head and neck tumors. We report the case of a 42-year-old patient complaining of headache, ptosis of the right eye and hypoesthesia of the face evolving for a few weeks. MRI showed a mass in the sphenoid sinus with local extension. The myelogram objectified the presence of 60% dystrophic plasma cells, which confirms the diagnosis of multiple myeloma. The patient received chemotherapy with a good course. Here, we report a rare case of sphenoidal sinus plasmacytoma that evolved into multiple myeloma.
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Bennane et al. (2024) studied this question.
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