A Case of a Sphenoid Sinus Mucocele Protruding into Both Nasal Cavities: Transnasal Endoscopic Marsupialization

A sphenoid sinus mucocele is a rare condition that causes a variety of symptoms by creating pressure on important contiguous neurological and vascular structures. The lesion is difficult to diagnose due to the subtlety of its symptoms, but careful radiological evaluation, with CT and MRI, for example, can help to provide a correct assessment. Transnasal endoscopic surgery can potentially deliver dramatic reduction in the operative morbidity of surgery for paranasal sinus mucoceles by offering an approach that is minimally invasive under local anesthesia. We experienced a 37-year-old male patient with a large sphenoid sinus mucocele protruding into both nasal cavities. The patient was treated with transnasal endoscopic marsupialization.