Table 3.
Histologic and morphologic characteristics of advanced adenomas in the two groups
| Variable | 2002 Group (n = 1,277) | 2012 Group (n = 2,446) | p value |
|---|---|---|---|
| Age, yr | 67.8 ± 10.5 | 64.1 ± 12.5 | 0.226 |
| Location, right:left | 17 (30.4):39 (69.6) | 36 (63.2):21 (36.8) | 0.010 |
| Shape | |||
| Pedunculated | 17 (30.4) | 5 (8.8) | |
| Subpedunculated | 10 (17.8) | 13 (22.8) | |
| Sessile | 17 (30.4) | 18 (31.6) | |
| Flat | 12 (21.4) | 21 (36.8) | |
| Size, cm | 1.5 ± 0.8 | 2.1 ± 1.2 | 0.145 |
| Histology | 0.104 | ||
| Tubular adenoma | 13 (23.2) | 19 (33.3) | |
| Villous adenoma | 4 (7.1) | 4 (7.0) | |
| Tubulovillous adenoma | 12 (21.4) | 14 (24.6) | |
| High grade dysplasia | 16 (28.6) | 13 (22.8) | |
| Adenocarcinoma | 11 (19.6) | 7 (12.3) |
Values are presented as mean ± standard deviation or number (%)