This paper is based on our experience in managing 79 cases of genitourinary tract anomalies diagnosed in utero and treated after birth. These babies seldom present as emergencies, and the antenatal diagnosis can usually be confirmed in the first few days of life. The surgical correction of these babies requires the services of a surgeon skilled and experienced in neonatal surgery. Surgeons experienced only in adult surgery may find these procedures technically difficult. Magnification is recommended. Postoperatively careful attention to fluid and electrolyte balance and correct functioning of drainage tubes is stressed. Antibiotic prophylaxis is vital, as is long-term follow-up.