Group 2 n=136 Transperitoneal n=64 Extraperitoneal n=72
Patient characteristics
Body mass index (kg/m2)
29.5 (25.1–34.7)
28.3 (24.5–34.9)
30 (26.4–34.4)
Waist circumference (cm)
105 (96–115)
104 (96–115)
105 (96–115)
Waist-Hip ratio
0.91 (0.86–0.98)
0.92 (0.86–0.99)
0.90 (0.85–0.97)
Sagittal abdominal diameter (mm)
234 (208–265)
234 (208–265)
235 (212–265)
Age at surgery (years)
66 (61–73)
66 (60–74)
66 (61–72)
Comorbidity index a
3 (2–4)
3 (2–4)
3 (2–4)
Surgical outcomes
Total operative time (min)
270 (240–300)
270 (240–300)
270 (225–315)
Para-aortic lymphadenectomy time (min)
90 (72–120)
90 (75–120)
90 (70–120)
Hematocrit drop b
6.6 (4.2–9.4)
6.3 (4.1–9.2)
6.7 (4.3–9.8)
Blood transfusion
6 (4.4)
3 (4.7)
3 (4.2)
Intraoperative complication
14 (10.3)
9 (14.1)
5 (6.9)
During para-aortic lymphadenectomy
6 (4.4)
4 (6.2)
2 (2.8)
c
8 (5.9)
5 (7.8)
3 (4.2)
Early postoperative complication
36 (26.5)
15 (23.4)
21 (29.2)
Related to para-aortic lymphadenectomy
2 (1.5)
1 (1.6)
1 (1.4)
c
11 (8.1)
7 (10.9)
4 (5.6)
Late postoperative complication
23 (16.9)
8 (12.5)
15 (20.8)
Related to para-aortic lymphadenectomy
1 (0.7)
0
1 (1.4)
c
13 (9.6)
6 (9.4)
7 (9.7)
Incomplete para-aortic lymphadenectomy
20 (14.7)
12 (18.8)
8 (11.1)
Laparoscopy conversion d
16 (11.8)
3 (4.7)*
13 (18.1)*
Surgical morbidity e 52 (43.7) 25 (44.6) 27 (42.9)