Table 3.
Five-year survival according to the extent of tumor spread
| Extent of tumor spread1 | No. of 5-yr survivors (n = 34) | No. of non-5-yr survivors (n = 18) |
| pT1 (n = 3) | ||
| pT1a pN0 pM0 (Stage I) | 2 | 0 |
| pT1b pN0 pM0 (Stage I) | 1 | 0 |
| pT2 (n = 36) | ||
| pT2 pN0 pM0 (Stage II) | 20 | 1 |
| pT2 pN1 pM0 (Stage IIIB) | 5 | 2 |
| pT2 pN2 pM0 (Stage IVB) | 4 | 3 |
| pT2 pN2 pM1 (Stage IVB) | 0 | 1 |
| pT3 (n = 12) | ||
| pT3 pN0 pM0 (Stage IIIA) | 0 | 3 |
| pT3 pN1 pM0 (Stage IIIB) | 2 | 3 |
| pT3 pN2 pM0 (Stage IVB) | 0 | 1 |
| pT3 pN0 pM1 (Stage IVB) | 0 | 2 |
| pT3 pN2 pM1 (Stage IVB) | 0 | 1 |
| pT4 (n = 1) | ||
| pT4 pN2 pM0 (Stage IVB) | 0 | 1 |
1
According to the American Joint Committee on Cancer Cancer Staging Manual (7th edition)[19]. pT: Pathological T classification; pN: Pathological regional lymph nodes classification; pM: Pathological distant metastasis classification.