This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pediatrics
[{'content': 'Commonest location for Craniopharyngioma is \nSelect and explain. \nA. Intrasellar, B. Suprasellar, C. Intraventricular, D. Intracerebral', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Commonest site of craniopharyngioma is Supra sellar region . Craniopharyngiomas are primarily suprasellar tumors (75%) while a small intrasellar component is present in 20-25% of cases . Purely intrasellar location is quite uncommon (<5%), and may be associated with the expansion of the pituitary fossa . Larger tumors can extend in all directions, frequently distoing the <a href=" chiasm</a> or compressing the . Occasionally, craniopharyngiomas appear as intraventricular, homogeneous, soft-tissue masses without calcification (papillary subtype). The third ventricle is a paicularly common location. Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]