<prompt> Anterior scalloping of veabrae seen in -Obsteogenesis imperfectaAoic aneurysmMetastasisRenal Cell Ca  <response>: Ans is option 2... Aoic aneurysm Anterior scalloping is seen in following conditions Aoic aneurysm, tuberculous spondylosis, lymphadenopathy, delayed motor development in downs syndrome Posterior scalloping is seen in Tumors in spinal canal ependymoma, lipoma,, neurofibroma, neurofibromatosis, acromegally, achondroplasia, congenital syndromes like Ehler-Danlos, Marfans, Hurlers etc Ref Chapman 3e p 88,89 