Table 4

Proportion of advanced TNM stage colorectal cancers according to the initial features of first adenomas removed and colonoscopic follow-up

Colorectal cancer diagnosed during follow-upTotalAmong patients with initial advanced adenomasAmong patients with initial non-advanced adenomas
(N=87)(N=53)(N=26)
TNM stage III/IV/unclassified32 (36.8%)21 (39.6%)9 (34.6%)
With colonoscopic follow-up8 (9.2%)4 (7.5%)3 (11.5%)
Without colonoscopic follow-up20 (23.0%)15 (28.3%)4 (15.4%)
Unknown colonoscopic follow-up4 (4.6%)2 (3.8%)2 (7.7%)