Bladder exstrophy

Bladder exstrophy is a congenital anomaly that exists along the spectrum of the exstrophy-epispadias complex, and most notably involves protrusion of the urinary bladder through a defect in the abdominal wall. Its presentation is variable, often including abnormalities of the bony pelvis, pelvic floor, and genitalia. [Source: Wikipedia ]

Synonyms
Ectopia vesicae
Exstrophy of the bladder
OrphaNet reference
Bladder exstrophy 
May Cause
Fetal anterior abdominal wall defect
Type B pelvis
Urinary tract calculus
Vesicoureteral reflux
Wide pubic symphysis
May Be Caused by
OEIS complex