<prompt> Bone within bone appearance is feature of?Fibrous DysplasiaOsteopetrosisOsteogenesis ImperfectaOsteoporosis  <response>: - Bone within Bone Appearance is seen in Osteopetrosis other causes of bone within bone appearance is: Sickle cell disease osteomyelitis Caffey disease Bone healing hypervitaminosis D Pagets disease acromegaly 