JOURNAL ARTICLE

[Partial nephrectomy using microwave tissue coagulator—application for laparoscopic operation]

Jo Yoshimichi, Keiji Inoue, Takashi Karashima, Takuya Hamaguchi, Kenji Tokinaga, Masayuki Kamada, Fumito Komatsu, Taro Shuin, Masakazu Chikazawa
Hinyokika Kiyo. Acta Urologica Japonica 2004, 50 (11): 763-6
15628535
We report our clinical findings on 12 tumors (11 patients) successfully resected by partial nephrectomy with a microwave tissue coagulator (MTC) without renal pedicle clamping, including laparoscopic operation in 4 patients. All patients presented with a renal tumor detected incidentally by ultrasonography or computed tomography. The mean size of renal tumor was 1.9 (range 0.8-3.4) cm. Pathological diagnosis was renal cell carcinoma in 9 tumors and hemorrhagic cyst in 3 tumors. Mean operative time was 249 minutes. Mean blood loss was 183 ml in cases with a laparoscopic operation, that was statistically less than 486 ml in cases with an open operation (p<0.05), and 376 ml in all cases. There was no significant change in the creatinine clearance of cases with laparoscopic operation, compared with that of cases with an open operation. There were no other serious complications postoperatively. These findings suggested that partial nephrectomy with the MTC can be safely and successfully carried out while sparing renal function. Moreover, partial nephrectomy with the MTC for a laparoscopic operation may provide these patients with more benefits.

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