<prompt> All of the following may occur in Down;s syndrome exceptHypothyroidismUndescended testisVentricular septal defectBrushfields spots  <response>: 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 