Retrospective Study
Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastroenterol. Aug 21, 2014; 20(31): 10927-10937
Published online Aug 21, 2014. doi: 10.3748/wjg.v20.i31.10927
Table 2 Clinicopathologic characteristics of different types of colorectal adenomas n (%)
CharacteristicTotal (n = 4632)Flat (n = 916)Protruding (n = 3716)χ2testP value
Location61.902< 0.001
Rectum1003184 (20.1)819 (22.0)
Left colon2054322 (35.2)1732 (46.6)
Right colon1575410 (44.8)1165 (31.4)
Size95.954< 0.001
< 6 mm1223353 (38.5)870 (23.4)
6-9 mm2159391 (42.7)1768 (47.6)
≥ 10 mm1250172 (18.8)1078 (29.0)
Pathological classification13.7750.001
Tubular3910745 (81.3)3165 (85.2)
Tubulovillous and villous666151 (16.5)515 (13.9)
Serrated5620 (2.2)36 (1.0)
Dysplasia7.5340.006
Low4370847 (92.5)3523 (94.8)
High26269 (7.5)193 (5.2)
Advanced adenoma19.606< 0.001
No3322711 (77.6)2611 (70.3)
Yes1310205 (22.4)1105 (29.7)