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Table 1 Clinicopathological characteristics of the CRC cohort

From: Comparison of non-schistosomal colorectal cancer and schistosomal colorectal cancer

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)
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
  1. “–,” data is not applicable. Abbreviation: N number