This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors of Nose and PNS, Subject name: ENT
Esthesioneuroblastoma arises from: 
Select and explain. 
A. Olfactory epithelium, B. Ethmoid sinus, C. Maxillary sinus, D. Sphenoid sinus
A: Olfactory epithelium
Answer: A: Olfactory epithelium 
Explanation: Ans. (a) Olfactory epitheliumRef: Dhingra's ENT 6th edJ 204* Esthesioneuroblastoma usually arise from the olfactory epthelium . It's 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.