Table 4.

Complications following surgery according to site of primary tumour. Anastomotic dehiscence were more common after anterior resection of rectum than after surgery for colonic cancer.

	Colon cancer	Rectal cancer	HNPCC*	Multicentric	p
Overall complications	180/476 (37.8)	151/406 (37.2)	4/8 (50)	8/12 (66.7)	0.19
Postoperative haemoperitoneum	3/476 (0.4)	2/406 (0.5)	0	0	0.98
Anastomotic dehiscence	26/456 (5.5)	33/305 (10.4)	2/8 (25)	0	0.01
Abdominal abscess	17/476 (3.6)	6/406 (1.5)	0	2/12 (16.7)	0.006
Wound complications	92/476 (19.3)	81/406 (20)	3/8 (37.5)	4/12 (37.6)	0.39
Pneumonia	16/476 (3.4)	4/406 (1)	0	4/12 (37.3)	0.025
Ileus	7/476 (1.5)	2/406 (0.5)	0	1/12 (8.3)	0.051
Urinary tract infection	8/476 (1.7)	15/406 (3.7)	0	1/12 (8.3)	0.16
CVC§infection	19/476 (4.0)	17/406 (4.2)	0	1/12 (8.3)	0.82
Cardiovascular	9/476 (1.9)	5/406 (1.2)	0	2/12 (16.7)	0.001
Others minor medical complications	8/476 (1.7)	8/406 (2.0)	0	0	0.92