<prompt> Esthesioneuroblastoma arises from:Olfactory epitheliumEthmoid sinusMaxillary sinusSphenoid sinus  <response>: Ans. a Olfactory epitheliumRef: Dhingras ENT 6th edJ 204 Esthesioneuroblastoma usually arise from the olfactory epthelium . Its a rare tumor of any age group . Presentation of tumor: cherry red, polypoidal spots mass in upper third of nasal cavity. It is a vascular tumor that bleeds profusely on biopsy. 