<prompt> All are seen in Treacher-Collins syndrome exceptConductive deafnessCleft palateMandibular hypoplasiaChoanal atresia  <response>: 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 