The incidence of anorectal malformation ~1 in 5,000 More common in Down's syndrome and Cat-eye syndrome. Male >female (60:40).It is classified into many types according to the degree of descent of the rectal pouch in the pelvis, the fistula between the rectum and the urinary system in males and genital system in females. The most common type in males is high anorectal malformation with rectourethral fistula