Table 2. Details of surgery and pathological staging.
| Characteristic | n (% where applicable) |
|---|---|
| Surgery | |
| Unresected primary rectal cancer | 114 (32.2) |
| Resected primary rectal cancer | 240 (67.8) |
| Uninvolved CRM | 224 (93.3) |
| Involved CRM | 16 (6.7) |
| Types of surgery (n=240) | |
| Anterior resection | 98 (40.8) |
| Abdomino-perineal resection | 98 (40.8) |
| Intersphincteric resection | 32 (13.3) |
| Exenteration | 12 (5.0) |
| ypT category (pathological T stage post neoadjuvant) | |
| T0 | 62 (17.5) |
| T1 | 10 (2.8) |
| T2 | 46 (13.0) |
| T3 | 99 (28.0) |
| T4 | 11 (3.1) |
| NA | 12 (3.4) |
| ypN category (pathological T stage post neoadjuvant) | |
| N0 | 169 (47.7) |
| N1 | 42 (11.9) |
| N2 | 29 (8.2) |
| TRG status | |
| 1/5 | 70 |
| 2/5 | 61 |
| 3/5 | 61 |
| 4/5 | 36 |
| 5/5 | 5 |
| NA | 7 |
| True pathological CR rates | 62 (17.5) |
CRM, circumferential margin; CR, complete response; TRG, tumor regression grade; NA, not available.