Solitary filling defect in ureters (mnemonic)

Last revised by Vikas Shah on 23 Jul 2020

Solitary filling defect with a ureter, as seen on conventional IVU or CT IVU has a few differentials which can be remembered using this mnemonic:

  • C: clot
  • U: ureteric stone
  • P: polyp
  • S: sloughed papilla


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