Prune-belly syndrome. A, Classic appearance of a wrinkled abdomen in a neonate. In older babies, the belly is less wrinkled and more floppy. B, Empty scrotum of the same infant. [Broken External Image]:http://uploadpic.org/storage/2011/CsY5sJjj76cyr03lmUbCPZrh.jpg Prune-belly syndrome. A, Classic appearance of a wrinkled abdomen in a neonate. In older babies, the belly is less wrinkled and more floppy. B, Empty scrotum of the same infant.