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Schwannomas of the Nose and Paranasal Sinuses

Schwannomas are benign neoplasms arising from the peripheral nerve sheath. The sinonasal tract is an unusual location for these neoplasms. Because of their rarity, few series have been reported. Five previously unreported cases of schwannomas of the nose and paranasal sinuses are presented that illustrate the spectrum of disease. The clinical presentation, diagnostic work-up, clinical course, and diverse therapeutic approaches will be discussed. A management philosophy based on the diversity of these tumors and their clinical behavior, and incorporating the new diagnostic and therapeutic tools available to the clinician will be presented. The implications of newer diagnostic techniques including sinonasal endoscopy, magnetic resonance imaging, and immuno-chemistry in the diagnosis and treatment of these tumors will be discussed.