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

Explanation

## Origin of Nasopharyngeal Angiofibroma **Key Point:** Nasopharyngeal angiofibroma (NAF) arises from the lateral nasopharyngeal wall, specifically in the region of the **sphenopalatine foramen** (also called pterygopalatine fossa region). ### Anatomical Basis The tumor originates from the mucosa and periosteum at the junction of the vomer and the sphenoid bone, near the sphenopalatine foramen. This explains: - Why it is highly vascular (fed by branches of the sphenopalatine artery) - Why it tends to grow posteriorly into the nasopharynx and laterally into the maxillary and sphenoid sinuses - Why epistaxis is a cardinal presenting symptom ### Clinical Correlation The tumor's origin from this specific location accounts for its characteristic growth pattern and the vascular complications encountered during surgical management. **High-Yield:** Remember the **sphenopalatine foramen region** as the pathognomonic origin site—this is tested frequently in NEET PG.