27 bone within-a-bone appearance

CLINICAL IMAGAGING�AN ATLAS OF DIFFERENTIAL DAIGNOSIS�EISENBERG

1. 27 Bone-within-a-Bone Appearance

2. CLINICAL IMAGAGING AN ATLAS OF DIFFERENTIAL DAIGNOSIS EISENBERG DR. Muhammad Bin Zulfiqar PGR-FCPS III SIMS/SHL

3. Fig B 27-1 Normal neonate. The arrowheads point to one example of the bone-within-a-bone appearance.

4. Fig B 27-2 Osteopetrosis. A miniature inset is seen in each lumbar vertebral body, giving it a bone-within-a-bone appearance. There is also sclerosis at the end plates. 31

5. Fig B 27-3 Thorotrast . Two examples of persistence of radiographic densities of infantile vertebrae in adult bones of patients who received intravenous Thorotrast during early childhood. 37

6. Fig B 27-4 Transverse growth lines. Opaque lines paralleling the superior and inferior margins of the vertebral body (arrows) in a child with severe chronic illness.