Update: We are now collecting Disclosures from all users who edit content. You will be prompted to update these when you next edit content or you can complete your disclosures at any time in your user profile. This has been reflected in an updated terms-of-use.


Last revised by Dr Jeremy Jones on 20 Sep 2021

Pseudoureterocoeles are acquired dilatations of the submucosal portion of the distal ureter that mimic simple ureteroceles. The appearance of the radiolucent wall surrounding the dilated distal ureteral segment (cobra head sign) is an important differentiating point. 

The distinction is important, since most pseudoureterocoeles were related to malignancy involving the bladder.

In a pseudoureterocoele:

  • the lucency or halo is thicker than that of a uterocele and is poorly defined; in cases of tumors, it may be irregular and may show a filling defect within the ureterocele 
  • there is asymmetry of the dilated ureteral lumen 
  • there is moderate to severe obstruction of the upper tract
  • there is evidence of an acquired cause, such as a calculus or abnormal vesical mucosal pattern. 
  • rarely, thickening of this lucency in a patient with a known ureterocele is usually associated with a complicating process, such as edema with a calculus

ADVERTISEMENT: Supporters see fewer/no ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.