Prune belly syndrome
Prune-Belly syndrome, also known as Eagle-Barrett syndrome, is a rare disorder characterized by partial or complete absence of the stomach (abdominal) muscles, failure of both testes to descend into the scrotum (bilateral cryptorchidism), and/or urinary tract malformations. Prune belly syndrome is uncommon, occurring in approximately 1 in 30,000 to 40,000 live births. Boys make up the majority of the affected population, accounting for 95 percent of the cases. The cause of prune belly syndrome is unknown; however, some cases have been reported in siblings, suggesting there may be a genetic component. Prune belly syndrome develops as the fetus is growing before birth. One theory is that if a blockage develops in the urethra (the tube that drains urine from the bladder to the outside of the body) urine can build up in the bladder, causing pressure and forcing the bladder to stretch to the point where it does not work as well.