No Visible Bladder
Non-visualization of the bladder with oligohydramnios
- Severe intrauterine growth restriction (common)
- Bilateral renal agenesis (common)
- Bilateral ureteral pelvic junction obstruction
- Bilateral multicystic dysplastic kidney
- Infantile polycystic kidney disease
- Cloacal exstrophy (very rare)
- Donor twin in twin-to-twin transfusion syndrome
Non-visualization of one fetal kidney
- Shadowing from the fetal spine
- Pelvic kidney
- Unilateral renal agenesis
- Crossed renal ectopia
Bilateral renal agenesis: Coronal scan of the abdomen, no visible kidney, oligohydramnios, elongated adrenal glands (arrow) seen in the renal fossa instead