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Table 1 Population and tumor samples characteristics

From: PDGFRα/β and VEGFR2 polymorphisms in colorectal cancer: incidence and implications in clinical outcome

  N (%)
Age (years)  
 · Median (range) 68 (45–87)
Gender  
 · Female 34 (37.0%)
 · Male 58 (63.0%)
Primary tumor location  
 · Right colon 27 (29.3%)
 · Transverse colon 5 (5.4%)
 · Left colon 9 (9.8%)
 · Sigmoid colon 18 (19.6%)
 · Recto sigmoid colon 14 (15.2%)
 · Rectum 19 (20.7%)
Histology  
 · Conventional adenocarcinoma 79 (85.9%)
 · Mucinous or colloid adenocarcinoma 12 (13.0%)
 · Signet ring cell adenocarcinoma 1 (1.1%)
Tumor differentiation  
 · Well differentiated 22 (23.9%)
 · Moderately differentiated 46 (50.0%)
 · Poorly differentiated 12 (13.0%)
TNM stage  
 · I 8 (8.7%)
 · II 22 (23.9%)
 · III 24 (26.1%)
 · IV 37 (40.2%)
 · Unknown 1 (1.1%)
Baseline CEA (ng/mL)  
 · High 33 (35.9%)
 · Normal 59 (64.1%)
 · Median (range) 3 (0–13.318)
  1. TNM: Tumor, Node and Metastases; CEA: carcinoembryonic antigen.