A Rare Case of Myoepithelioma in the Sphenoid Sinus.

A 72-year-old male was admitted to the hospital with 3 months of vision loss and 1 month of aggravation. Computed tomography and magnetic resonance imaging examinations revealed a tumor in the sphenoid region, which was treated with surgical resection. Based on the pathology and immunohistochemistry findings, the tumor was diagnosed as a myoepithelial tumor. The patient was in good condition after surgery. Myoepithelial tumors are rare, with an even rarer occurrence in the sphenoid sinuses, where such tumors are particularly challenging to diagnose preoperatively. Diagnosis relies on postoperative pathology and immunohistochemistry. Surgery remains the primary treatment approach.