ENT General d02159b3 All of the following are diagnostic criteria of allergic Fungal sinusitis (AFS) except: A Areas of High attuenuation on CT scan B Orbital invasion C Allergic eosinophilic mucin D Type 1 Hypersensitivity High-Yield Explanation Allergic fungal sinusitis is a noninvasive form of fungal sinusitis as such orbital invasion is not its feature.