Endoscopic Endonasal Approach for the Treatment of Benign Schwannoma of the Sinonasal Tract and Pterygopalatine Fossa

Schwannomas are tumors that rarely involve the sinonasal tract or the pterygopalatinefossa. Three cases of benign schwannomas originating in the nasal cavity, the nasal-ethmoid, and the pterygopalatine fossa are reported. Surgical treatment is considered the treatment of choice to achieve long-term success. In this study, the effectiveness of the endoscopic endonasal approach is outlined for the diagnosis and treatment of these benign tumors.