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 epsinophilic mucin, (D) Type 1 Hypersensitivity
Answer is B. Allergic fungal sinusitis is a noninvasive form of fungal sinusitis as such orbital invasion is not its feature.