Esthesio neuroblastoma arises from -: (A) Olfactory N, (B) Maxillary N, (C) Ophthalmic N, (D) Nasociliary N
Answer is A. Esthesioneuroblastoma or olfactory neuroblastoma are uncommon highly malignant tumors, arising from the neuroendocrine cells in the olfactory mucosa. Ref : Osborn Neuroradiology 1/e p493