R.E.N.A.L. nephrometry score predicts treatment efficacy

December 27, 2012
R.E.N.A.L. nephrometry score predicts treatment efficacy
The R.E.N.A.L. (radius, exophytic/endophytic, nearness to collecting system or sinus, anterior/posterior and location relative to polar lines) nephrometry scoring system predicts the efficacy of treatment and major complications that occur after percutaneous renal ablation for treatment of tumors, according to research published in the January issue of The Journal of Urology.

(HealthDay)—The R.E.N.A.L. (radius, exophytic/endophytic, nearness to collecting system or sinus, anterior/posterior and location relative to polar lines) nephrometry scoring system predicts the efficacy of treatment and major complications that occur after percutaneous renal ablation for treatment of tumors, according to research published in the January issue of The Journal of Urology.

Grant D. Schmit, M.D., of the Mayo Clinic in Rochester, Minn., and colleagues applied the R.E.N.A.L. criteria to 751 renal tumors in 627 patients to examine the correlation with oncological outcomes and complications after percutaneous ablation. Fifty-seven percent of tumors were treated with cryoablation and 43 percent were treated with radio frequency ablation.

The researchers found that the mean score for renal tumors treated with was significantly higher than for those treated with radio frequency ablation (7.2 ± 1.9 versus 6.1 ± 1.8). Over an average follow-up period of 27.9 months, 28 local treatment failures occurred. R.E.N.A.L. nephrometry score was significantly associated with local , with a mean score of 7.6 ± 2.2 in cases of failure versus 6.7 ± 1.9 in cases without failure. R.E.N.A.L. score was also significantly associated with major complications, with a mean score of 8.1 ± 2.0 in cases with a major complication versus 6.8 ± 1.9 in cases without a major complication.

"The R.E.N.A.L. nephrometry predicts oncological outcomes and complications following percutaneous renal ablation," the authors write. "As such, this tool may be used to facilitate the standardization of comparisons of treatment efficacy and safety across various approaches to small renal tumors."

One author disclosed to the medical device and technology industries.

Explore further: Similar outcomes for robot-aided, conventional nephrectomy

More information: Abstract
Full Text

Related Stories

Recommended for you

Researchers discover rare flu-thwarting mutation

September 29, 2016

A rare and improbable mutation in a protein encoded by an influenza virus renders the virus defenseless against the body's immune system. This University of Rochester Medical Center discovery could provide a new strategy ...

Utah man may have contracted Zika from dying father's tears

September 29, 2016

A Utah man who mysteriously contracted Zika from his infected father may have got it by touching his dad's tears or sweat with his bare hands, according to new research unveiled Wednesday that found the unusual transmission ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.