Congenital Malformation of the central nervous system. Congenital anamolis is also called a birth defect. Congenital Anamolis: = Any metabolic, biochemical, structural and functional disorder present in a child at the time of birth. Congenital Malformation := When only structural defects are present in the child at the time of birth, it is called “Congenital Malformation”. Congenital anamolis affects any part of the body and results in physical and developmental