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Staging and survival of CRC.
| Dukes' staging | TNM staging | Description | Survival (%) |
|---|---|---|---|
| Stage 0 | Carcinoma in situ | ||
| A | Stage I | No nodal involvement, no metastasis, tumor invades submucosa (T1, N0, M0), tumor invades muscularis (T2, N0, M0) | 90–100% |
| B | Stage II | No nodal involvement, no metastasis, tumor invades subserosa (T3, N0, M0), invade other organ (T4, N0, M0) | 75–85% |
| C | Stage III | Regional lymph nodes involved (any T, N1, M0) | 30–40% |
| D | Stage IV | Distant metastasis (any T, any N, M1) | <5% |
