<unk>  is a rare, genetic birth defect affecting about 1 in 40,000 births. About 97% of those affected are male.<unk>  is a congenital disorder of the urinary system, characterized by a triad of symptoms. The syndrome is named for the mass of wrinkled skin that is often (but not always) present on the abdomen of those with the disorder.
Prune belly syndrome
Gastroschisis
Koolen–De Vries syndrome
Cooks syndrome
Cowden syndrome
Bruck syndrome
Van Wyk and Grumbach syndrome
Flynn–Aird syndrome