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To test the hypothesis that a modified technique for renal parenchymal closure during laparoscopic partial nephrectomy (LPN) enables a significant reduction in warm ischaemia (WIT).

Perioperative factors including WIT were prospectively recorded during 40 consecutive LPNs performed by a single experienced laparoscopist. In the first 20 (controls), renal parenchyma was closed by conventional technique (haemostasis and closure of the collecting system with interrupted sutures, then closure of the renal parenchyma over a Surgicel bolster before unclamping the renal artery). In the second consecutive 20 patients (group 1), a modified closure technique was used, which involved earlier arterial unclamping after two (group 1a) or one (group 1b) running suture on the tumour bed. Vascularised renal parenchyma was then closed over a surgical bolster.

All LPNs were performed …