The typical crew cut appearance seen in sickle cell anemia because
of:
1. Capillary stasis decreased blood supply to bone
2. Resorption of marrow leads to expansion of skull bone
3. Expansion of marrow leads to resorption of bone with apposition of new bone
on skull
4. All of the above
๐ Explanation:
The expansion of the marrow space due to increased hematopoiesis can lead to resorption of the outer cortical bone and the formation of new bone, resulting in the characteristic "crew cut" appearance on X-rays. This appearance is due to the trabecular pattern of the skull becoming more prominent as the outer layer is resorbed.
MCQ