T1a 腎細胞癌に対するマイクロ波組織凝固装置による後腹膜鏡下無阻血腎部分切除術の手術成績

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We evaluated the perioperative complications and preliminary oncological outcomes in patients with T1a renal cell carcinoma (RCC) who underwent non-ischemic retroperitoneoscopic partial nephrectomy by using a microwave tissue coagulator (MTC). Seventeen patients (11 men and 6 women) with T1a RCC underwent this procedure at our institute. The mean age and tumor size were 59 years (range: 33-80) and 26 mm (range: 15-40), respectively. The mean operation time and estimated blood loss were 212 min (range: 120-266) and 128 mL (range: 5-570), respectively. No patient received transfusion. No patient showed intra-operative and post-operative urine leakage, bleeding, ileus, wound infection or renal insufficiency. The mean follow-up period was 42 months (range: 1-90). During the follow-up period, no patient showed any local recurrence or distant metastasis, and all patients are alive without cancer now. Non-ischemic retroperitoneoscopic partial nephrectomy by using an MTC is a less-invasive procedure for T1a RCC in patients selected by appropriate indication criteria.