Juvenile nasopharyngeal angiofibroma characteristically arises from the region of the posterolateral wall of the nose at the level of the posterior attachment of the middle turbinate. The specific anatomical structure at this site is the:

• A Sphenopalatine foramen ✓
• B Foramen rotundum
• C Pharyngeal opening of the Eustachian tube
• D Fossa of Rosenmuller

Explanation

JNA originates in the vicinity of the sphenopalatine foramen at the posterior attachment of the middle turbinate, then expands medially into the nasal cavity and laterally into the pterygopalatine fossa, producing the classic anterior bowing of the posterior maxillary wall (Holman-Miller sign). The fossa of Rosenmuller is the subsite of origin of nasopharyngeal carcinoma, and confusing the two origins is the intended trap.

Reference: Scott-Brown's Otorhinolaryngology and Head and Neck Surgery, 8th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.