Patient Selection Indication And Contraindications

General indications for radiofrequency ablation of renal tumors are the same as with conventional nephron-sparing surgery surgery and include the following: contrast-enhancing (>10-12 Hounsfield units), small renal masses (<4 cm), tumor in solitary kidney, bilateral tumors, and renal insufficiency.

Contraindications for laparoscopic radiofrequency ablation generally are ones that prevent the creation of a pneumoperitoneum including multiple adhesions, history of peritonitis, and difficulty with ventilation. Contraindications for a percutaneous radiofrequency ablation approach include anterior renal tumors, colon or small bowel within 1 cm of the tumor, a large spleen or liver interfering with probe passage, and tumors immediately adjacent to the ureter or the renal pelvis (15).

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