Over a period of 6 ½ years 304 biopsies from sinonasal mass lesionswere studied. Non–neoplastic lesions (79.93%) were common than neoplastic lesions (19.07%). 68.42 % of all cases were in the age range of 11 to 40 years. Overall Male to Female ratio was 2:1. Commonest non–neoplastic lesions were inflammatory and allergic polyps(72.84%). Lobular capillary hemangiomacell carcinoma, nasopharyngeal carcinoma and melanoma were common malignant neoplasms. Clinical features overlap between various non neoplastic and neoplastic lesions. FNAC and frozen section have a very limited utility. In fungal lesions, erosion of adjacent bone may lead to false impression of malignancy on CT scan.