Table 2. Relapse outcome for CT and endoscopy by R margin resection status.
| Characteristics | Resection Status | ||
|---|---|---|---|
| R0 N (%) | R1 N (%) | All Patients* N (%) | |
| Relapse | |||
| Yes | 60 (28%) | 17 (59%) | 79 (32%) |
| No | 149 (70%) | 12 (41%) | 162 (66%) |
| Lost to Follow-up | 3 (1%) | 0 (0%) | 4 (2%) |
| Missing | 0 (0%) | 0 (0%) | 1 (0%) |
| Relapse Location | |||
| Distant | 56 (93%) | 16 (94%) | 73 (92%) |
| Luminal/Regional | 4 (7%) | 1 (6%) | 6 (8%) |
| Type of Imaging Study | |||
| CT-Contrast | 48 (80%) | 15 (88%) | 65 (82%) |
| MRI | 3 (5%) | 0 (0%) | 3 (4%) |
| PET-CT | 7 (12%) | 2 (12%) | 9 (11%) |
| Missing | 2 (3%) | 0 (0%) | 2 (3%) |
| Failure Suspected by Imaging | |||
| Yes | 53 (88%) | 16 (94%) | 70 (89%) |
| No | 5 (8%) | 1 (6%) | 7 (9%) |
| Missing | 2 (3%) | 0 (0%) | 2 (3%) |
| Endoscopy Done at Relapse | |||
| Yes | 36 (60%) | 13 (76%) | 51 (65%) |
| No | 23 (38%) | 4 (24%) | 27 (34%) |
| Missing | 1 (2%) | 0 (0%) | 1 (1%) |
| Biology Confirmed | |||
| Yes | 3 (5%) | 3 (18%) | 7 (9%) |
| No | 33 (55%) | 10 (59%) | 44 (56%) |
| Not Done | 24 (40%) | 4 (24%) | 28 (35%) |
*Five patients overall and 2 relapsed patients are missing R Margin status so rows will not always sum to the All Patients numbers