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Selective irradiation range of target area after the operation
| Stage | Stomas | Tumor bed and organ affected area | Lymphatic drainage area |
| Cases of palliative care may only irradiate the primary lesion and metastatic lesions that cause symptoms. | |||
| T4bNany | Cutting margin ≤3 cm must include | Yes | Yes |
| T1−4aN+ | No | Yes | |
| T4aN0 | No | Yes | |
| T3N0 | No | Yes | |
