Survey of K-ras mutation positive lesions in each of the 13 patients
| Patient no | Microdissected lesions | K-ras mutation positive (%) | Mucosa specimens | K-ras mutation positive (%) |
|---|---|---|---|---|
| 1 | 18 | 0 | 8 | 0 |
| 2 | 15 | 5 (33) | 8 | 2 (25) |
| 3 | 19 | 2 (11) | 8 | 1 (12.5) |
| 4 | 8 | 0 | 4 | 0 |
| 5 | 13 | 0 | 8 | 0 |
| 6 | 15 | 3 (20) | 8 | 1 (12.5) |
| 7 | 11 | 1 (9) | 8 | 0 |
| 8 | 13 | 0 | 9 | 2 (22) |
| 9 | 10 | 2 (20) | 8 | 1 (12.5) |
| 10 | 9 | 2 (22) | 7 | 1 (14.5) |
| 11 | 16 | 6 (37.5) | 9 | 1 (11) |
| 12 | 6 | 0 | 7 | 1 (14.5) |
| 13 | 8 | 0 | 8 | 0 |
| Total | 161 | 21 (13) | 100 | 10 (10) |