Inverted papilloma of the nose is associated with all of the following EXCEPT:

• A Endophytic (inverting) growth into the underlying stroma
• B High recurrence rate after simple polypectomy
• C Predilection for bilateral occurrence in the ethmoid sinus ✓
• D Malignant transformation in approximately 10% of cases

Explanation

Inverted papilloma (Schneiderian papilloma, fungiform type) is a unilateral tumour arising predominantly from the lateral nasal wall (middle meatus region) and extending into the maxillary and ethmoid sinuses. It is known for endophytic growth, high recurrence after simple excision (requires medial maxillectomy or FESS with wide resection margins), and malignant transformation (~10% synchronous or metachronous SCC). Bilateral occurrence is not a characteristic feature; bilateral nasal papillomas should raise suspicion of an alternative diagnosis.

Reference: Dhingra Diseases of Ear, Nose and Throat, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.