dr Swati Bhardwaj
Pediatric Nephrologist
BLK Super Speciality Hospital
About Author

Following signs in an antenatal ultrasound suggest obstruction-

  • Presence of oligohydramnios
  • Dilatation of urethra
  • Keyhole sign which is seen in boys with Posterior uretheral valves. It refers to a dilated proximal urethera with a thickened trabeculated bladder, which on ultrasound appears like a Key hole.
  • Thickening of bladder wall
  • Thinning of renal cortex
  • Renal cysts


Posted On: 23/08/2018

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