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Table 1 Clinical characteristics of the patients used in this study

From: Promoter methylation of Wnt-antagonists in polypoid and nonpolypoid colorectal adenomas

  Normal colorectal mucosa (n = 18) Nonpolypoid adenomas (n = 44) Polypoid adenomas (n = 44) Carcinomas (n = 18)
Gender M/F 6/12 24/20 22/22 8/10
Age (years) 71.33 (49-84) 70.77 (50-87) 70.98 (40-90) 71.50 (51-91)
Location     
 Left colon   14 40 7
 Right colon   30 4 10
Size   17.30 (5-100) 19.39 (6-64) N/A
Paris classification     
 0-IIa   18   
 LST-G   7   
 LST-NG   19   
 0-Ip    44  
Histology/AC-stage     
 Tubular/B1   21 22 2
 Tubulovillous/B2   20 18 9
 Villous/B3   2 4 1
 Serrated/C2   1   5
 C3     1
Dysplasia     
 Mild (LGD)   2 1  
 Moderate (LGD)   38 36  
 Severe (HGD)   4 7  
Chromosome 5q loss   8/38 1/30  
APC methylation   34/41 29/44  
APC mutation   16/44 26/44  
  1. Right colon includes caecum, ascending and transverse colon; Left colon includes sigmoid, descending and splenic flexure; 0-IIa, slightly elevated adenoma; LST-G, Granular lateral spreading type adenoma; LST-NG, Non-granular lateral spreading type adenoma; 0-Ip, polypoid adenoma; AC-stage, Astler-Coller stage; LGD, low grade dysplasia; HGD, high grade dysplasia.