Comparison of non-schistosomal colorectal cancer and schistosomal colorectal cancer

Table 1 Clinicopathological characteristics of the CRC cohort

Characteristics	All patients (N = 351)		Patients with stage I–II disease (N = 192)		Patients with stage III–IV disease (N = 159)		Patients with LNM (N = 144)		Patients without LNM (N = 207)
Characteristics	N	%	N	%	N	%	N	%	N	%
Age (< 60 years)	83	24	46	24	37	23	34	24	49	23
Gender (male)	214	61	118	61	65	59	71	49	123	57
Tumor location
Rectum	94	27	50	26	44	28	37	26	57	28
Left colon	115	33	61	32	54	34	51	35	64	31
Right colon	142	40	81	42	61	38	56	39	86	41
Tumor size (< 5 cm)	174	50	94	50	80	49.7	71	49	103	48
Differentiation
Well diff.	267	76	165	86	102	65	93	65	173	82
Poor diff.	84	24	27	14	57	35	51	35	36	18
Lymphovascular invasion (positive)	122	35	46	24	76	48	68	47	54	26
Nervous invasion (positive)	31	1.0	12	6.0	19	12	18	12.5	13	6
Lymph nodes positive for CRC (> 2)	42	1.2	1.0	0.0	41	26	35	24	7	3
Colonic perforation (yes)	13	0.4	8	4.0	5	3.0	4	3.0	9	4.0
Tumor budding (≥ 5 cells)	219	62	99	52	120	75	110	79	109	53
Ulceration (yes)	149	42	79	41	70	44	64	44	85	41
Histological type
Adenocarcinoma	311	89	173	90	138	87	124	86	187	90
Mucinous/SRCC	40	11	19	10	21	13	20	14	20	10
Pathological T stage
T1–2	80	23	65	34	15	9	14	10	63	31
T3–4	271	77	127	66	144	91	130	90	146	69
Lymph node metastasis
No	207	60	189	98	18	12	–	–	–	–
Yes	144	40	3	2	141	88	–	–	–	–
TNM stage
I + II	190	54	–	–	–	–	3	2	192	92
III + IV	161	46	–	–	–	–	141	98	17	8
Schistosomiasis	137	39	76	40	61	38	56	39	81	40

ISSN: 1477-7819