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Clampless laparoscopic partial nephrectomy: a step towards a harmless nephron-sparing surgery?

Francesco Porpiglia¹, Riccardo Bertolo, Ivano Morra

¹Division of Urology - San Luigi Gonzaga Hospital - Orbassano (Turin), Italy. porpiglia@libero.it

International Braz J Urol : Official Journal of the Brazilian Society of Urology

|September 7, 2012

Summary

Clampless laparoscopic partial nephrectomy (LPN) offers a safe and effective surgical option for small renal masses (SRMs). This technique minimizes kidney damage from ischemia, proving beneficial even for complex tumor locations.

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Area of Science:

Urology
Surgical Oncology
Nephrology

Background:

Small renal masses (SRMs) are increasingly detected, necessitating effective and kidney-sparing treatment options.
Partial nephrectomy is the standard surgical approach for SRMs, aiming to preserve renal function.
Minimizing ischemia during partial nephrectomy is crucial for preventing renal damage.

Purpose of the Study:

To evaluate the outcomes of a clampless laparoscopic partial nephrectomy (cl-LPN) technique.
To assess the impact of cl-LPN as an emerging treatment for small renal masses (SRMs).

Main Methods:

A prospectively maintained database of 117 patients undergoing LPN between January 2009 and December 2011 was reviewed.
Patients were divided into two groups: clampless LPN (cl-LPN) and conventional LPN with renal artery clamping.
Perioperative data, complications, and renal function (serum creatinine, eGFR) were compared between groups.

Main Results:

The clampless LPN group (41 patients) had significantly smaller tumors compared to the conventional LPN group (76 patients).
Warm ischemia time was 0 minutes for cl-LPN, versus a mean of 20.90 minutes for conventional LPN.
A significantly smaller postoperative decrease in estimated glomerular filtration rate (eGFR) was observed in the cl-LPN group (p=0.0445).

Conclusions:

Clampless LPN is a safe and effective technique for surgically treating SRMs.
This approach allows for the treatment of SRMs, including those in complex locations, without causing ischemic injury to the kidney.
Cl-LPN represents a valuable advancement in minimally invasive renal surgery.