Laparoendoscopic single-site radical nephrectomy: a comparison with conventional laparoscopy.

PURPOSE: To study the feasibility and safety of laparoendoscopic single-site (LESS) radical nephrectomy, we compared the operative results with conventional laparoscopic radical nephrectomy. PATIENTS AND METHODS: Ten patients underwent LESS radical nephrectomy for renal tumors (group 1). Two types of single-port devices, a SILS port and a homemade single-port device that was made using a surgical glove and a wound retractor, were used through a 4-cm periumbilical incision. The operative results of LESS radical nephrectomy matched those of 12 patients who underwent conventional laparoscopic radical nephrectomy (group 2). For comparing the 2 groups, the Mann-Whitney U test and the Fisher exact test were used.
RESULTS: LESS surgeries were completed successfully, without conversion to conventional laparoscopic or open surgery. The patients' characteristics did not differ significantly between the two groups. The mean operative times in groups 1 and 2 were 127.7 ± 22.3 minutes and 126.1 ± 43.1 minutes, respectively (P = 0.235). The mean estimated blood loss was 185.7 ± 121.9 mL and 324.0 ± 187.0 mL, respectively (P = 0.65). The complication rates were 10% and 17%, respectively (P = 0.658). The mean times to postoperative initiation of ambulation and initiation of oral intake were not different in the two groups (1.1 vs 1.0 days, P = 0.269; 1.0 vs 1.0 day, P = 1.0). The mean lengths of hospital stay were 6.5 and 6.1 days (P = 0.435). The mean tumor sizes were 4.0 cm and 5.2 cm (P = 0.345).
CONCLUSIONS: LESS radical nephrectomy is technically feasible and comparable to conventional laparoscopy. Long-term follow-up and technical development, however, are needed for assessing the cancer-control effect and facilitating the minimal invasiveness of the surgery.