Endoscopic Resection of a Rare Case of Frontoethmoidal Glomangiopericytoma: A Case Report

We report a case of a 58-year-old man with a history of nasal obstruction and recurrent epistaxis who underwent videonasolaryngoscopy after 9 months of symptoms.The first images showed a hyperemic mass affecting the left middle turbinate up to the nasal cleft.Computed tomography described a mass with an expansive effect occupying the entire left frontal sinus and most of the left ethmoid cells, widening the frontal sinus drainage path, and creating a continuity break of the cribriform plate, the left papyraceous lamina, and the upper-third of the nasal septum.Magnetic resonance imaging suggested T1-isointensity and T2-hyperintensity, intense contrast uptake, and no involvement of meningeal or brain tissues.The patient underwent extended endoscopic surgery without previous endovascular embolization or adjuvant therapies.A contralateral inferior turbinate graft was applied over the cribriform plate.Histopathological examination suggested glomangiopericytoma (GPC), and immunohistochemistry confirmed the diagnosis with positive beta-catenin, smooth muscle actin, and cyclin D1.The patient presented no nasal symptoms up to a 9-month follow-up.Nasal endoscopy showed no tumor recurrence signal.Although fronto-ethmoidal GPC is a rare tumor and presents challenging surgical access, it can be safely excised by endoscopic surgery.However, careful short-and long-term endoscopic follow-ups remain necessary to prevent postoperative complications and maintain surveillance of recurrences.