Triad of deficient or absent abdominal musculature, undescended testicles, and dysplasia of the urinary tract.
Physical exam shows a wrinkled anterior abdominal wall.
Etiology is unknown. Aplasia of the muscles of the lower medial abdominal wall. The kidneys have a decreased number of functioning nephrons with variable cystic dysplasia. The dilated ureters and bladder have a patchy absence of smooth muscle. They can have umbilical-bladder attachment or a patent urachus.