All of the following are diagnostic criteria of allergic fungal sinusitis {AFS} Except ?
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)
Areas of high attuenuation on CT scan
Orbital invasion
Allergic eosinophilic mucin
Type 1 Hypersensitivity
Nose and paranasal sinuses