Prediction of partial nephrectomy outcomes by using the diameter‐axis‐polar nephrometry score

Maeda, Motohiro; Funahashi, Yasuhito; Sassa, Naoto; Fujita, Takashi; Majima, Tsuyoshi; Gotoh, Momokazu

doi:10.1111/iju.12356

Cited by 11 publications

(10 citation statements)

References 23 publications

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“…Maeda et al . showed a significant association in a prospective study . Their findings were in accord with those of other reports.…”

supporting

confidence: 92%

“…In patients with a healthy contralateral kidney, therefore, WIT limited to 40 min might be allowable for preservation of chronic kidney function . There was no direct association between WIT and late renal function in the reports by Simmons and Maeda et al ., which could be because their series included only small numbers of patients with WIT exceeding 40 min.…”

mentioning

confidence: 94%

“…As the authors wrote in this article, it was reported that the R.E.N.A.L. score was associated with ischemia time and perioperative complications in partial nephrectomy (PN) . In contrast, predictive factors for renal functional outcomes after PN were evaluated in several reports.…”

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confidence: 99%

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Editorial Comment to Prediction of partial nephrectomy outcomes by using the diameter‐axis‐polar nephrometry score

Tanaka

2013

Int J of Urology

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ischemic time. We demonstrated that the ischemic duration was long, and that the decrease in ERPF was large in the patients with a high DAP score. For better preservation of residual renal function, it might be more effective to select open partial nephrectomy with application of cold ischemia in such cases.Concerns regarding the DAP score remain because the distance between the tumor edge and the urinary collecting system is not evaluated in this scoring system. As shown in the results, the N score among the R.E.N.A.L nephrometry scores was positively associated with decreased postoperative renal function and prolonged ischemic time. In addition, the DAP score might not predict the risk of complications, such as urinary fistula, although we experienced no such cases in the present study. The significance of tumor depth assessment should be investigated in the future.The limitations of the present study include its retrospective nature and potential measurement variability. Multiple surgeons carried out the surgeries. The indications for laparoscopic surgery were determined by surgeons' preferences. Further prospective study with more samples is required to further validate the efficacy of the DAP nephrometry score.The DAP nephrometry score was more strongly associated with postoperative renal functional changes and ischemic time in patients undergoing partial nephrectomy than was the R.E.N.A.L nephrometry score. The DAP nephrometry system was suitable for assessment of the complexity of small renal tumors. Conflict of interestNone declared.

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“…Maeda et al . showed a significant association in a prospective study . Their findings were in accord with those of other reports.…”

supporting

confidence: 92%

mentioning

confidence: 94%

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Editorial Comment to Prediction of partial nephrectomy outcomes by using the diameter‐axis‐polar nephrometry score

Tanaka

2013

Int J of Urology

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“…they demonstrated that DaP sum score was normally distributed, while no normal distribution was noted for r.e.n.a.l score or its components [16]. However, external validation of DaP nephrometry was not sufficiently performed [23,24]. and DaP nephrometry itself has no information about the anatomic location of tumor, while r.e.n.a.l nephrometry can include detail anatomic characteristics of tumor (i.e., anterior/posterior, nearness to the collecting system or touching the main vessels).…”

Section: Discussionmentioning

confidence: 99%

Usefulness of the diameter–axial–polar nephrometry score for predicting perioperative parameters in robotic partial nephrectomy

et al. 2014

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“…proposed the DAP by integrating the optimized attributes of the RENAL and C‐index scoring systems with simplified methodology and decreased measurement error . Reports have compared DAP with RENAL and found a better association of DAP with WIT and postoperative renal function outcomes . However, these reports included patients receiving open, laparoscopic and robotic approaches.…”

Section: Introductionmentioning

confidence: 99%

Comparison of diameter‐axial‐polar nephrometry score and RENAL nephrometry score for surgical outcomes following laparoscopic partial nephrectomy

et al. 2015

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Abbreviations & Acronyms BMI = body mass index C-index = centrality index DAP = diameter-axial-polar nephrometry score EBL = estimated blood loss eGFR = estimated glomerular filtration rate LPN = laparoscopic partial nephrectomy PADUA = preoperative aspects and dimensions used for an anatomical PN = partial nephrectomy RENAL = radius, exophytic/ endophytic, nearness, anterior/posterior, location nephrometry score ROC = receiver operating characteristics WIT = warm ischemic time Objectives: To compare diameter-axial-polar nephrometry score with RENAL nephrometry score for surgical outcomes after laparoscopic partial nephrectomy. Methods: We retrospectively reviewed data from 134 patients who underwent laparoscopic partial nephrectomy, using diameter-axial-polar and RENAL scores. We analyzed data for warm ischemic time and estimated blood loss intraoperatively, and percentage change in estimated glomerular filtration rate 6 months and 1 year postoperatively. Both scores were classified as low-, middle-and high-risk, and were used to compare the three analyzed parameters. Results: The median tumor size was 2.3 cm (range 1.0-5.4 cm); warm ischemic time was 25.4 min (range 6.5-57 min); and at 6 months and 1 year, percentage change in estimated glomerular filtration rate was 93% (range 51.7-133.3%) and 91% (range 49.4-137.6%), respectively. There were no significant differences in warm ischemic time and estimated blood loss for RENAL between risk groups (P = 0.38 and 0.09, respectively), but significant differences between groups for diameter-axial-polar score (P = 0.02 and 0.01, respectively). There were no significant differences in either score between groups for percentage change in estimated glomerular filtration rate at 6 months and 1 year. A total of 27 high-risk cases with a diameter-axial-polar score of seven points underwent laparoscopic partial nephrectomy safely; all three cases with a diameter-axial-polar score of eight points were converted to open partial nephrectomy. Conclusions: Diameter-axial-polar score seems to estimate the complexity of tumor characteristics in patients undergoing laparoscopic partial nephrectomy better than RENAL score. It has a better correlation with warm ischemic time and estimated blood loss.

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Prediction of partial nephrectomy outcomes by using the diameter‐axis‐polar nephrometry score

Cited by 11 publications

References 23 publications

Editorial Comment to Prediction of partial nephrectomy outcomes by using the diameter‐axis‐polar nephrometry score

Editorial Comment to Prediction of partial nephrectomy outcomes by using the diameter‐axis‐polar nephrometry score

Usefulness of the diameter–axial–polar nephrometry score for predicting perioperative parameters in robotic partial nephrectomy

Comparison of diameter‐axial‐polar nephrometry score and RENAL nephrometry score for surgical outcomes following laparoscopic partial nephrectomy

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