Pediatric Cystic Renal Dysplasia

  • Etiology: Congenital obstruction of the genitourinary system due to posterior urethral valves or urethral agenesis
  • Imaging US: Small echogenic kidneys with multiple cysts
  • DDX:
  • Complications:
  • Treatment:
  • Clinical:

Radiology Cases of Cystic Renal Dysplasia

Radiology Cases of Cystic Renal Dysplasia Due to Urethral Atresia

US of urethral atresia resulting in cystic renal dysplasia, urine ascites and oligohydramnios
Sagittal US of the left kidney (above left) shows it to be small, echogenic, and to contain multiple cysts. Sagittal US of the right kidney (above right) shows it to have a similiar appearance. There is also a large amount of anechoic fluid around the right kidney which represents urine ascites. Transverse US of the bladder (below left) shows it to be thick walled. CXR AP (below right) shows a small bell-shaped chest with bilateral chest tubes present that were treating the bilateral pneumothoraces that were present at birth.