All of the following may occur in Down's syndrome except: (A) Hypothyroidism, (B) Undescended testis, (C) Ventricular septal defect, (D) Brushfield's spots
Answer is B. 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.