Impact of the “L” score from the RENAL nephrometry score on RAPN surgical outcomes in medial versus lateral renal tumors

Impact of the “L” score from the RENAL nephrometry score on RAPN surgical outcomes in medial versus lateral renal tumors

Abstract The significance of “L” score in the radius (R), exophytic/endophytic (E), nearness (N), anterior/posterior (A), location (L); RENAL nephrometry scoring system remains unestablished compared to other subscores. This study assessed the influence of the “L” score on surgical and functional ou...

Full description

Saved in:
Bibliographic Details
Main Authors: Yasuhiro Numata, Hiroki Ito, Seiichiro Honda, Kota Kobayashi, Ryosuke Jikuya, Tomoyuki Tatenuma, Go Noguchi, Daiki Ueno, Mitsuru Komeya, Yusuke Ito, Kentaro Muraoka, Kazuki Kobayashi, Hisashi Hasumi, Kazuhide Makiyama
Format: Article
Language:English
Published: Nature Portfolio 2025-07-01
Series:Scientific Reports
Subjects:
Robot-assisted partial nephrectomy
RENAL nephrometry score
Trifecta
Pentafecta
Online Access:https://doi.org/10.1038/s41598-025-08647-2
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract The significance of “L” score in the radius (R), exophytic/endophytic (E), nearness (N), anterior/posterior (A), location (L); RENAL nephrometry scoring system remains unestablished compared to other subscores. This study assessed the influence of the “L” score on surgical and functional outcomes of RAPN, dividing renal tumors into medial and lateral relative to the kidney’s central line, to explore its impact on “L” score utility. A retrospective analysis was conducted on 668 RAPN patients, with 405 having medial and 263 lateral renal tumors. Patients who underwent RAPN were retrospectively analyzed, including 405 with medial renal tumors and 263 with lateral renal tumors. In medial tumors, the “L” score independently predicted non-achievement of trifecta (P = 0.011) and pentafecta (P = 0.032). In lateral tumors, the “L” score did not predict non-achievement of these outcomes. In conclusion, significance of the “L” score on surgical outcomes differs between medial and lateral tumors and it is strongly associated with outcomes in medial tumors, whereas its predictive value in lateral tumors is less marked. The RENAL nephrometry score lacks differentiation between medial and lateral tumors; therefore, surgeons should interpret “L” scores with caution.
ISSN:2045-2322

Similar Items