<prompt> Wormian bones are seen in all exceptOsteogenesis imperfectaPyknodysostosisCretinismRenal osteodystrophy  <response>: Ans: d Renal osteodystrophy Ref: O.P. Ghai, ed, p. 482Important causes of wormian bonesHypothyroidism cretinismHypophosphatasiaRicketsCleido-craniodysostosis pyknodysostosisOsteogenesis imperfecta 