<prompt> Orchidopexy is done in cases of undescended testes at the age of :Neonate1 2 years5 yearsPuberty  <response>: Congenital undescended testis should be treated surgically no later than 9-15 months. Surgical correction at 6 months is appropriate. - Nelson.Cryptorchidism :An undescended testis cryptorchid is the most common disorder of sexual differentiation in boys.At birth, approximately 4 - 5 of boys have an undescended testis.The majority of undescended testes descend spontaneously during the first 3 months of life, and by 6 months the incidence decreases to 0.8.If the testis has not descended at 4 months, it will remain undescended.Cryptorchidism is bilateral in 20 of cases.Consequences of cryptorchidism :Infertility.Testicular malignancy Most common seminoma.Psychological effects of empty scrotum.Torsion.Associated hernia. 