Nasopharyngeal angiofibroma is a benign vascular tumor that typically arises from which anatomical location?

Explanation

## Anatomical Origin of Nasopharyngeal Angiofibroma **Key Point:** Nasopharyngeal angiofibroma (NAF) arises from the lateral wall of the nasopharynx, specifically near the fossa of Rosenmüller (lateral pharyngeal recess), in the region of the sphenopalatine foramen. ### Embryological Basis The tumor originates from remnants of the **pharyngeal bursa** or from vascular tissue near the sphenopalatine foramen, which explains its highly vascular nature and its predictable location. ### Clinical Significance - The lateral wall origin explains why the tumor typically extends into the maxillary and sphenoid sinuses as it grows - This location accounts for the characteristic **unilateral presentation** (almost always one-sided) - Growth pattern is typically posterolateral and superior, filling the nasopharynx and extending into the pterygopalatine fossa **High-Yield:** The fossa of Rosenmüller is the **only correct anatomical origin** for NAF; this is a high-frequency NEET PG recall question.