Down syndrome

• atlantoaxial subluxation
• Wormian bones
• absent/small paranasal sinuses

• endocardial cushion (AV canal) defects
• aberrant right subclavian artery

• 2 ossification centers for manubrium (90%)
• 11 or 13 ribs

• duodenal atresia / stenosis
• tracheo-esophageal fistula
• Hirschsprung dz

© 2002, C.E. Kahn, Jr.
2002-04-18