Table 1 Demographic features of the study group
From: Clinically suspected T4 colorectal cancer may be resected using a laparoscopic approach
Open surgery | Laparoscopic surgery | P-value | |
|---|---|---|---|
n = 222 | n = 71 | ||
Age (years) | 0.321 | ||
median (range) | 61.0 (17–84) | 59.0 (36–80) | |
Sex | 0.372 | ||
Female | 96 (43.2 %) | 35 (49.3 %) | |
Male | 126 (56.8 %) | 36 (50.7 %) | |
BMI (kg/m2) | 0.011 | ||
median (range) | 22.6 (15.2-31.3) | 23.6 (17.3-31.9) | |
ASA score | 0.377 | ||
1 | 90 (40.5 %) | 33 (46.5 %) | |
2 + 3 + 4 | 132 (59.5 %) | 38 (53.5 %) | |
Preoperative CEA (ng/ml) | 0.005 | ||
mean ± SD | 9.5 ± 20.6 | 4.5 ± 8.6 | |
Previous abdominal operation history | 0.169 | ||
Negative | 48 (21.6 %) | 21 (29.6 %) | |
Positive | |||
Combined resection of an adjacent organ (%) | 73 (32.9 %) | 7 (9.9 %) | <0.001 |
Location of tumor (%) | 0.956 | ||
Right colona | 77 (34.70 %) | 26 (35.60 %) | |
Left colona | 77 (34.70 %) | 24 (33.80 %) | |
Rectum | 68 (30.60 %) | 21 (29.60 %) | |
Clinical T4 status | <0.001 | ||
T4a | 130 (58.6 %) | 58 (81.7 %) | |
T4b | 92 (41.4 %) | 13 (18.3 %) | |
Clinical N status | 0.523 | ||
Negative | 9 (4.10 %) | 4 (5.60 %) | |
Positive | 213 (95.90 %) | 67 (94.40 %) | |
Cancer obstruction (%) | 90 (40.5 %) | 17 (23.9 %) | 0.011 |
Cancer perforation (%) | 23 (10.4 %) | 2 (2.8 %) | 0.048 |