Benign sinonasal neoplasms represent a diverse group of pathologic entities. The most commonly associated symptoms include nasal obstruction, rhinorrhea, epistaxis, or facial pressure/pain. Comprehensive evaluation begins with a thorough history, physical exam, and nasal endoscopy followed by imaging. CT is typically utilized as the primary imaging modality; however, MRI can offer complimentary information in select cases. Biopsy provides diagnostic information and can aide in treatment planning. Endoscopic surgery is the mainstay of current therapy, whereas open and endoscopic-assisted procedures (hybrid), although utilized, are less common.

Inverted papilloma represents a unique, benign, sinonasal neoplasm that has malignant potential. Associations with HPV, as well as risk factors for malignant transformation, are being actively studied. The evaluation is similar too other benign sinonasal neoplasms. Thorough endoscopic surgery with careful attention to, and removal of, the attachment site is the most commonly accepted treatment modality currently. Recurrence of inverted papilloma is possible and potential risk factors have been described. Post-surgical surveillance is important.

JNA represents a benign but locally aggressive vascular neoplasm found almost exclusively in adolescent males. Given its vascular origins special considerations in evaluation and management exist. These tumors can have intracranial extension and therefore both CT and MRI are often performed in the evaluation. Most patients undergo angiography with pre-operative embolization prior to surgical resection. Many of these tumors can be resected with endoscopic techniques.