All of the following may occur in Down&;s syndrome except
Congenital or acquired hypothyroidism,brush field spots in iris,and ventricular septal defect IS seen in a case with down syndrome. Undescended testis is not a feature. Reference: Nelson TB of pediatrics 19th edtn pg 402
Hypothyroidism
Undescended testis
Ventricular septal defect
Brushfield's spots
Genetic and genetic disorders