Table 1. Clinicopathological characteristics of colorectal cancer patients after radical resection.

Characteristics	Subgroup	Patients (n=1,054)	Percentage (%)
Gender	Male	598	56.7
	Female	456	43.3
Age (years)	<30	37	3.5
	30–49	341	32.4
	50–69	591	56.1
	≥70	85	8.1
Tumor site	Right-sided colon	159	15.1
	Left-sided colon	186	17.6
	Upper rectum	34	3.2
	Middle rectum	279	26.5
	Lower rectum	340	32.3
	Anus	27	2.6
	Multiple lesions	29	2.8
Surgery procedure	Right hemicolectomy	143	13.6
	Left hemicolectomy	80	7.6
	Sigmoidectomy	98	9.3
	Transverse colon resection	19	1.8
	Anterior resection	211	20.0
	Abdominal perineal resection	490	46.5
	Bacon’s resection	13	1.2
Histological type	Adenocarcinoma	908	86.1
	Mucinous adenocarcinoma (signet ring cell)	140	13.3
	Undifferentiated	6	0.6
Differentiation	Well	140	13.3
	Moderately	441	41.8
	Poor	93	8.8
	Undifferentiated	6	0.6
	Undefined	374	35.5
Stage	I	142	13.5
	II	587	55.7
	III	325	30.8