<prompt> Bone in a bone appearance is seen in all except -NeonatesAcromegalyOsteopetrosisActive scurvy  <response>: Ans. is d i.e., Active scurvyo Bone in Bone appearance is seen in healed scurvy not in active disease,o Bone within a bone appearance is seen in : - Normal neonate Prostaglandin El therapy Growth arrestrecovery lines Heavy metal e.g., Lead poisoning Bisphosphonate therapy Hypothyroidism Hypoparathyroidism Sickle cell anemia Hypercalcemia Hypervitaminosis D Osteopetrosis Rickets Osteomalacia healed phase Acromegaly Scurvy healed phase 