Glomangiopericytoma of Sinonasal Cavity: Case Report of a Rare Entity.

Glomangiopericytoma is an uncommon tumor of the sinonasal region, originating from the pericytes that envelop capillaries, and it accounts for fewer than half a percent (0.5%) of all sinonasal tumors. This report presents the case of a 65-year-old man who experienced worsening nasal obstruction and was subsequently diagnosed with glomangiopericytoma based on histological, immunohistochemical, and radiographic findings. The patient underwent a complete excision of the tumor via an endoscopic endonasal approach. Upon follow-up after the surgical resection, the patient exhibited no signs of recurrence.