digeorge deletion
22q11
digeorge patho/sx
CATCH-22
thymic, parathyroid, cardiac defects
aberrant development of 3rd-4th branchial pouches
velocardiofacial deletion
22q11
velocardiofacial patho/sx
CATCH-22
palate, facial, cardiac defects
aberrant development of 3rd-4th branchial pouches