Follow up | Colonoscopy | Chestx ray | Liver CT |
Standard (n=158) | 72 | 17 | 66 |
Intensive (n=167) | 577 | 650 | 674 |
No of extra investigations | 505 | 633 | 608 |
No of asymptomatic recurrences resulting from extra investigations | 0 | 0 | 10 |
No of cures resulting from extra investigations | 0 | 1 | 1 |