Prune Belly Syndrome
Prune belly syndrome (PBS). Occurring only in boys, PBS causes a baby to have an enlarged abdomen because the normal abdominal wall muscles are missing or very weak. The entire urinary tract is enlarged, and both testicles remain inside the body instead of descending into the scrotum. The skin over the abdomen is wrinkled, giving the appearance of a prune. Most children with PBS have hydronephrosis and VUR.