Soft-tissue rim sign

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[edit] Discussion of Soft-tissue rim sign

  • Sign helps distinguish a stone in the ureter from a phlebolith.
  • The soft-tissue rim sign is caused by edema of the ureteral wall surrounding a stone at its site of impaction.
  • It should be noted, however, that the soft-tissue rim sign may be absent with stones larger than 4 mm or when a stone is impacted at the ureterovesical junction.

[edit] Images

Patient #1

[edit] See Also

[edit] References for Soft-tissue rim sign