Research Article
Simultaneous Integrated Boost Volumetric Modulated Arc Therapy for Rectal Cancer: Long-Term Results after Protocol-Based Treatment
Table 3
Pathological analysis after chemoradiation.
| | Characteristics | | (%) |
| | ypT-stage | | | | ypT0/tis | 3/1 (20) | | ypT1 | 2 (10) | | ypT2 | 3 (15) | | ypT3 | 10 (50) | | ypT4b | 1 (5) | | ypN-stage | | | | ypN0 | 16 (80) | | ypN1a | 1 (5) | | ypN1b | 2 (10) | | ypN2 | 1 (5) | | Resection margin | | | | Wide | 20 (100) | | Close (<1 mm) or positive | 0 (0) | | Tumor regression grade | | | | 1 | 3 (15) | | 2 | 8 (40) | | 3 | 6 (30) | | 4 | 3 (15) | | Lymphatic invasion | | | | Negative | 19 (95) | | Positive | 1 (5) | | Venous invasion | | | | Negative | 19 (95) | | Positive | 1 (1) | | Perineural invasion | | | | Negative | 17 (85) | | Positive | 3 (15) |
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