Extranasopharyngeal Angiofibroma of Maxillary Sinus: A Diagnostic Dilemma

Nasopharyngeal angiofibroma is a benign neoplasm of the nasopharynx with a propensity for aggressive local spread. It is responsible for 0.5% of head and neck cancer cases. Primarily affected are teenagers and young adults in the agerange of 14–25 years. It is an aggressive tumor that frequently spreads locally, destructive, including the base of the skull and the cranium. Evidence points to an androgen-dependent tumor given the substantial preference for young guys. Usually, the tumor originates around the sphenopalatine foramen. We present a case of angiofibroma in a young adult arising from the lateral wall of the nasal cavity around the maxillary sinus, masquerading as an antrochoanal polyp. Diagnostic nasal endoscopy was suggestive of an antrochoanal polyp. NCCT nose and PNS showed that the tumor originated from the lateral wall of the nasal cavity around maxillary sinus ostium with and left maxillary sinus opacification. Histopathological examination shows dense fibrocollagenous stromal proliferation interspersed with staghorns of various sizes and numerous thin-walled vessels, characteristic features of juvenile nasopharyngeal angiofibroma. After surgical resection, the person was followed for up to six months without tumor recurrence.