Soft tissue rim sign

The soft-tissue rim sign is used to distinguish a ureteric calculus from a phlebolith. The former appears as a calcific density with a surrounding rim of soft tissue which represents the oedematous ureteric wall. Phleboliths on the other hand usually have imperceptible walls (although up to 8% may have a soft tissue rim sign 2) but may have a comet-tail sign.

This sign may be absent in cases of a larger ( >4mm) calculus or in cases of a uretrovesical calculus. 3

Share article

Article information

rID: 10394
System: Urogenital
Section: Signs
Synonyms or Alternate Spellings:
  • Rim-sign (of ureteric calculi)

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Bilateral calcifi...
    Case 1 - soft tissue rim sign - right
    Drag here to reorder.
  • Drag
    Case 2
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

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

    Alert accept Thank you for updating your details.