| Histology | Differentiated | 0 |
| Undifferentiated | 11 | |
| size (mm) | 20 - 80 | mean 33.0 |
| Ulcer | Presence | 9 |
| Absence | 1 | |
| Unknown | 1 | |
| Operation | Total | 1 |
| Distal | 10 | |
| Proximal | 0 | |
| Partial | 0 | |
| LN resection | D1 | 0 |
| D1+ | 0 | |
| ≥D2 | 11 | |
| N factor | N1 | 9 |
| N2 | 1 | |
| N3 | 1 | |
| Stage | IB | 9 |
| IIA | 1 | |
| IIB | 1 | |
| range | ≤D1 | 11 |
| D1 ≤ D1+ | 0 | |
| D1+ ≤ D2 | 0 |