Mallick, SSharma, VLavania, ABorgohain, B2025-07-312025-07-312008https://hdl.handle.net/20.500.14572/1054Mallick S1, Sharma V 1, Lavania A 1, Borgohain B2 1 Assistant Professor, 2Professor & HOD, Dept of Otolaryngology, Manipal College of Medical Sciences, Pokhara, Nepal.Abstract Allergic Fungal Sinusitis (AFS) is believed to be an allergic reaction of the sinus mucosa to environmental fungi that is finely dispersed into the air. We present a 23 year old man who presented to us with a unilateral nasal mass with foul smelling discharge and headache. Functional Endoscopic Sinus Surgery (FESS) was performed. Microbiology and histopathological examination of the mass confirmed it to be a case of AFS. Key words: Allergic fungal sinusitis, Nasal polyps, FESSen-USArticle