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.
- 1. Guest AR, Cohan RH, Korobkin M et-al. Assessment of the clinical utility of the rim and comet-tail signs in differentiating ureteral stones from phleboliths. AJR Am J Roentgenol. 2001;177 (6): 1285-91. AJR Am J Roentgenol (full text) - Pubmed citation
- 2. Heneghan JP, Dalrymple NC, Verga M et-al. Soft-tissue "rim" sign in the diagnosis of ureteral calculi with use of unenhanced helical CT. Radiology. 1997;202 (3): 709-11. Radiology (abstract) - Pubmed citation
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Rim-sign (of ureteric calculi)||✓|