ArticleBMC cancer2025
Optimal thresholds for the distance between tumor and collecting system predicting collecting system opening and trifecta achievement in RAPN.
Article in BMC cancer, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundWe examined the clinical significance of the distance between the tumor and collecting system or sinus (DTCS), representing the nearness (N) score in the RENAL nephrometry score, on outcomes of robotic-assisted partial nephrectomy (RAPN).
methodsWe retrospectively analyzed 425 patients who underwent RAPN between 2016 and 2021. Multivariate binary logistic regression was used to assess predictive preoperative clinical factors. Receiver operating characteristic (ROC) curve analysis determined the optimal DTCS cutoff point for each outcome.
resultsThe mean DTCS was 4.0 mm (SD 4.6), and 79 were N1, 97 N2, and 249 N3. DTCS was significantly associated with opening of the collecting system (p < 0.001) and trifecta achievement (p = 0.085), but not with pentafecta achievement. Optimal DTCS cutoff values were 4 and 7 mm for opening of the collecting system, and 0 mm for trifecta achievement.
conclusionsWhile the DTCS cutoff value of 4 and 7 mm may indicate surgical technical difficulty, the 0 mm appears to be the more clinically relevant cutoff value for perioperative outcome risk stratification.
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