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Table 1 Clinicopathological features of patients with rectal adenocarcinoma involving different locations along the rectum

From: Rectal cancer level significantly affects rates and patterns of distant metastases among rectal cancer patients post curative-intent surgery without neoadjuvant therapy

Location of the tumor above the anal verge (cm) 0-5 cm 5.1-10 cm 10.1-15 cm
Total number of patients with tumors at different locations 117 331 436
Number of female patients (%) 61 (52.14%) 151 (45.62%) 192 (44.04%)
Number of male patients (%) 56 (47.86%) 180 (54.38%) 244 (55.96%)
Age, mean ± SD (range) years 67 ± 14 (30-96) 64 ± 14 (30-90) 65 ± 13 (24-95)
Degree of differentiation    
  Well 11 (9.40%) 32 (9.67%) 42 (9.63%)
  Moderate 96 (82.05%) 285 (86.10%) 375 (86.01%)
  Poor 10 (8.55%) 14 (4.23%) 19 (4.36%)
Tumor invasion depth    
  T3 83 (70.94%) 221 (66.67%) 259 (59.40%)
  T4 34 (29.06%) 110 (33.23%) 177 (40.60%)
Lymph node status    
  N0 53 (45.30%) 147 (44.41%) 194 (44.50%)
  N1 27 (23.08%) 84 (25.38%) 138 (31.65%)
  N2 37 (31.62%) 100 (30.21%) 104 (23.85%)