Instrumentation and Technique: Laser

With increased detection of small renal masses, a minimally invasive treatment option that could be performed percutaneously under image guidance using a technology that is widely available can be very useful. The technology and technique must effectively destroy tumor cells with minimal patient morbidity. Laser technology is easily and widely available in many hospitals and has potential for the above application. There are several animal studies evaluating different types of lasers both in the form of interstitial tissue ablation and laser resection of kidney tissue. Also, there are clinical studies that have evaluated the safety and efficacy of percutaneous laser interstitial ablation to treat renal malignancy under magnetic resonance imaging guidance. Currently, laser application to treat renal tumors is investigational. Further evaluation is warranted, including the capability for real-time accurate monitoring of the laser ablation process, confirmation of adequate kill zone, and methods to increase the size of the treatment ablation area.