Typical symptoms include impaired bone growth and thick bones that easily break The diagnosis is based on symptoms and x-ray studies Osteopetrosis that occurs in infancy is fatal if not treated. In osteopetrosis (sometimes called marble bones), the body does not recycle old bone cells. These changes make bones weaker than normal. The dense bone tissue also crowds out the bone marrow, which is where blood cells are formed Bone growth is usually impaired. Bones thicken and break easily. Formation of blood cells may be impaired because of a lack of bone marrow, leading to anemia, infection, or bleeding.

Typical symptoms include impaired bone growth and thick bones that easily break The diagnosis is based on symptoms and x-ray studies Osteopetrosis that occurs in infancy is fatal if not treated. In osteopetrosis (sometimes called marble bones), the body does not recycle old bone cells. These changes make bones weaker than normal. The dense bone tissue also crowds out the bone marrow, which is where blood cells are formed

Bone growth is usually impaired.