This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous ENT, Subject name: ENT
[{'content': 'All are seen in Treacher-Collins syndrome except \nSelect and explain. \nA. Conductive deafness, B. Cleft palate, C. Mandibular hypoplasia, D. Choanal atresia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Treacher-Collins syndrome (mandibulofacial dysostosis) : * Antimongoloid palpebral fissures * Coloboma of lower lid * Hypoplasia of mandible and malar bones * Microtia pinna and meatal atresia * Malformed malleus and incus (stapes normal) Ref: Textbook of ENT, Dhingra; 6th edition; Pg no: 116 ref img', 'role': 'assistant'}]