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Zero ischemia laparoscopic partial thulium laser nephrectomy.

Arun Z Thomas¹, Lisa Smyth, Derek Hennessey

¹Department of Urology, St James Hospital , Dublin, Ireland .

Journal of Endourology

|January 11, 2013

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The thulium laser effectively removes small kidney tumors during laparoscopic partial nephrectomy (LPN), offering precise control and excellent hemostasis with zero ischemia time. This approach preserves renal function and achieves negative tumor margins.

Area of Science:

Urology
Minimally Invasive Surgery
Oncology

Background:

Laser technology shows promise for tumor excision and renal hemostasis.
Limited evaluation of laser use in laparoscopic partial nephrectomy (LPN).

Purpose of the Study:

To prospectively evaluate the thulium:yttrium-aluminum-garnet laser in LPN.
Assess feasibility and outcomes of laser-assisted LPN.

Main Methods:

Prospective study of 15 patients undergoing LPN using a 2013 nm thulium laser.
Collected data included tumor size, PADUA score, operative time, warm ischemia time (WIT), blood loss, renal function (creatinine, eGFR), and pathology.
Renal vessels were not clamped in any cases.

Main Results:

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Mean tumor diameter 2.85 cm, mean PADUA score 6.8.
Mean operative time 168 minutes, mean blood loss 341 mL.
Zero WIT, no significant change in creatinine or eGFR postoperatively.
13/15 tumors were pT1a renal-cell carcinoma with negative margins.

Conclusions:

The 2013-nm thulium laser provides excellent hemostasis and precise renal cortex resection during LPN.
Demonstrated excellent perioperative outcomes: minimal blood loss, zero ischemia, negative margins, and preserved renal function.
Suitable for small, partially exophytic renal tumors.