Factors predicting recurrence after curative resection for rectal cancer: a 16-year study

Table 2 Demographic and clinical characteristics of the patients with and without recurrence

	Without recurrence, n = 135		Recurrence, n = 53		Total, N = 188
	N	%	N	%	N	%
Demographic characteristics
Sex
Male	84	62.2	24	45.3	108	57.4
Female	51	37.8	29	54.7	80	42.6
Age
< 50 years	23	17.0	18	34.0	41	21.8
≤ 50 years	112	83.0	35	66.0	147	78.2
Clinical characteristics
Location of the tumor
Upper rectum	36	26.7	9	17.0	45	23.9
Middle rectum	49	36.3	16	30.2	65	34.6
Low rectum	50	37.0	28	50.9	77	41.0
Size of the tumor
< 5 cm	92	68.1	24	45.2	116	61.7
> 5 cm	43	31.1	29	54.8	72	38,3
Stenotic character
Yes	21	15	13	24.6	34	18
No	114	85	40	75.4	154	82
CEA levels
Normal	26	19.2	24	45.2	50	27
Abnormal	109	80.8	29	54.8	138	73
Neoadjuvant therapy
Yes	85	62.9	35	66	120	63.8
No	50	37.1	18	34	68	36.2
Surgical intervention
Abdominoperineal resection	22	15.6	13	24.5	35	18.1
Anterior resection of the rectum	108	70.4	36	67.9	144	77.1
Local excision	5	4.4	4	7.5	9	4.8
Distal margin
≤ 2 cm	37	27.4	31	58.4	68	37
> 2 cm	90	72.6	22	41.6	112	63
Intraoperative incident
Yes	32	23.7	17	32	49	26
No	103	76.3	36	68	139	64
pT stage
T1–T2	54	40	10	18.8	64	34
T3–T4	81	60	43	81.2	124	66
Invasion of neighboring organs
Yes	6	4	10	18.8	16	8.5
No	129	96	43	81.2	172	11.5
Tumor perforation
Yes	2	1.5	5	9.4	7	3.7
No	133	98.5	48	90.6	181	96.3
pN stage
N0	106	78.5	21	39.6	127	67.5
N+	29	21.5	32	60.4	61	32.5
Extra capsular invasion
Yes	8	6	31	58.4	39	20.7
No	127	64	22	41.6	149	79.3
Vascular emboli
Yes	10	7.4	20	37.7	30	16
No	125	92.6	33	62.3	158	84
Lymphatic and perineural invasion
Yes	7	5.2	14	26.4	21	11.1
No	128	94.8	39	73.6	167	88.9
pTNM stage
I and II	102	75.5	22	41.5	124	66
III and IV	33	84.5	31	58.5	64	34

ISSN: 1477-7819