Abnormal findings associated with undescended testis in Nigerian children.

Children between the ages of 6 years and 12 years numbering 2200, were examined for general physical development and external abnormality to correlate these anomalies with frequency of undescended testis. Whereas the overall frequency of undescended testis in this population was 0.5%, this condition was present in 1% of boys with peri-umbilical hernia. Undescended testis should be looked for in children with external congenital anomalies, particularly of the anterior abdominal wall.