Osteopetrosis is a rare metabolic bone disease characterized by generalized increase in skeletal mass. About 500 cases have been described in the literature. This disorder presents. In one of three forms: Osteopetosis Tarda , Osreopetrosis Congenital and “marble bone” disease. Osteopetrosis congentia results in bone marrow failur and is almost always fatal. Marble bone disease causes short st...