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Outcomes of high-complexity renal tumours with a Preoperative Aspects and Dimensions Used for an Anatomical (PADUA) score of ≥10 after robot-assisted partial nephrectomy with a median 46.5-month follow-up: a tertiary centre experience

 Ali Abdel Raheem  ;  Atalla Alatawi  ;  Dae K. Kim  ;  Abulhasan Sheikh  ;  Ibrahim Alabdulaali  ;  Woong K. Han  ;  Young D. Choi  ;  Koon H. Rha 
 BJU INTERNATIONAL, Vol.118(5) : 770-778, 2016 
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OBJECTIVES: To compare perioperative trifecta achievement and long-term oncological and functional outcomes between patients with renal tumours of low [Preoperative Aspects and Dimensions Used for an Anatomical (PADUA) score 6-7], intermediate (PADUA score 8-9) and high (PADUA score ≥10) complexity undergoing robot-assisted partial nephrectomy (RAPN), and to determine predictors for trifecta achievement.

PATIENTS AND METHODS: Data were retrospectively analysed from 295 patients, who underwent RAPN, between 2006 and 2015, at a high-volume tertiary centre. Trifecta achievement was the primary outcome measurement. The perioperative parameters and long-term oncological and functional outcomes were the secondary outcome measures. Groups were compared using the Kruskal-Wallis H test or chi-square test. Univariable and multivariable binary logistic regression analyses were used to determine the most important determinant variables associated with trifecta accomplishment. The Kaplan-Meier method was used to estimate overall survival (OS), cancer-specific survival (CSS) and cancer-free survival (CFS).

RESULTS: Of the 295 patients, 121 (41%) had a PADUA score of ≥10. Patients in the high-complexity PADUA group had larger tumours (P ≤ 0.001), higher clinical stages ≥T1b (P < 0.001), an increased risk of malignancy (P = 0.02), longer warm ischaemia time (P = 0.0030), and higher estimated blood loss (P = 0.001) compared with those in the intermediate- and low-complexity groups. Seven of eight patients who were converted to radical nephrectomy had high-complexity tumours (P = 0.02). Trifecta achievement was less in the high-complexity PADUA group (P < 0.001). Renal functional outcomes did not differ among the groups at follow-up (P > 0.05). There were no significant differences between the groups for OS (P = 0.314), CSS (P = 0.228) and CFS (P = 0.532). In multivariable analysis, the American Society of Anesthesiologists classification, operative time and tumour size were independent predictors of trifecta achievement (P = 0.001, P = 0.03, and P = 0.006, respectively).

CONCLUSION: High-complexity PADUA tumours are associated with a lower rate of trifecta achievement; however, long-term oncological and functional outcomes seem to be equivalent among high-, intermediate-, and low-complexity tumours. Despite the perioperative outcomes; high-complexity tumours can be handled successfully via the robotic approach and the improved long-term oncological and functional outcomes might be considered useful for patients counselling.
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1. College of Medicine (의과대학) > Dept. of Urology (비뇨의학교실) > 1. Journal Papers
Yonsei Authors
Rha, Koon Ho(나군호) ORCID logo https://orcid.org/0000-0001-8588-7584
Raheem, Ali Abdel(알리압델)
Choi, Young Deuk(최영득) ORCID logo https://orcid.org/0000-0002-8545-5797
Han, Woong Kyu(한웅규) ORCID logo https://orcid.org/0000-0002-2527-4046
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