All of the following are diagnostic criteria of allergic fungal sinusitis {AFS} Except ?
High-Yield Explanation
CT scan shows mucosal thickening with hyperdense areas in fungal sinusitis. Allergic fungal sinusitis is due to the type 1 hypersensitivity reaction to fungal hyphae. It presents with sinonasal polyposis and mucin. (Ref: Textbook of ENT, Diseases of ENT, Dhingra, 7th edition, pg no. 220)