<prompt> Bone within bone appearance is seen in?CMLOsteoporosisOsteopetrosisBone infarct  <response>: C i.e. Osteopetrosis In osteopetrosis, there is reduced osteoclastic bone resorption resulting in diffuse symmetrical skeleton sclerosis. Also ka marble bone disease dt its stone like quality of bones; however the bones are abnormally brittle fracture like a piece of chalk. It can present radiologically as? Sclerosis of all bones more prominent at base of skullQ. Sclerosis of veebral end plate 1t characteristic sandwitch or broad stripped rugby jersey spine Q Bone in bone appearanceQ dt sclerotic foci within the bone. 