The pathological changes of large intestinal mucosa at different tumor–inducing stages
| Week | n | Normal | Dysplasia | Adenocarcinoma | |||
|---|---|---|---|---|---|---|---|
| Mild | Moderate | Severe | Intramucous carcinoma | Infiltrative carcinoma | |||
| 12th | 10 | 2 | 3 | 4 | 1 | 0 | 0 |
| 18th | 10 | 0 | 2 | 4 | 4 | 0 | 0 |
| 24th | 9 | 0 | 0 | 1 | 2 | 5 | 1 |
| 32nd | 15 | 0 | 0 | 0 | 1 | 2 | 12 |
Outcome of rank test; H=33.35, P<0.01.