Table 1 Clinical and pathological data
DRG0 | DRG1 | DRG2 | DRG3 | DRG4 | |
|---|---|---|---|---|---|
Tumor location | |||||
Upper rectum | 0 | 2 | 3 | 0 | 0 |
Middle rectum | 1 | 15 | 20 | 6 | 2 |
Lower rectum | 0 | 13 | 24 | 11 | 7 |
Type of surgery | |||||
Anterior resection | 1 | 24 | 32 | 8 | 7 |
Amputation | 0 | 6 | 15 | 9 | 2 |
UICC TNM stage | |||||
Stage 0 | 0 | 0 | 0 | 0 | 6 |
Stage I | 0 | 6 | 9 | 6 | 0 |
Stage II | 0 | 8 | 8 | 5 | 0 |
Stage III | 1 | 13 | 17 | 3 | 1 |
Stage IV | 0 | 3 | 13 | 3 | 2 |
Depth of infiltration by ypT | |||||
ypT0 | 0 | 0 | 0 | 0 | 9 |
ypT1 | 0 | 1 | 1 | 4 | 0 |
ypT2 | 0 | 6 | 12 | 6 | 0 |
ypT3 | 1 | 21 | 34 | 7 | 0 |
ypT4 | 0 | 2 | 0 | 0 | 0 |
Depth of extramural extension, vital tumor | |||||
None | 0 | 7 | 13 | 10 | 9 |
Early (<3 mm) | 0 | 2 | 10 | 5 | 0 |
Progressed (3 to 10 mm) | 1 | 16 | 19 | 2 | 0 |
Deep (>10 mm) | 0 | 5 | 5 | 0 | 0 |
Nodal status (ypN) | |||||
ypN0 | 0 | 15 | 20 | 13 | 7 |
ypN1 | 1 | 7 | 17 | 3 | 1 |
ypN2 | 0 | 8 | 10 | 1 | 1 |
Lymphatic spread (L) | |||||
Absent | 0 | 25 | 43 | 17 | 9 |
Present | 1 | 5 | 4 | 0 | 0 |
Venous angioinvasion (V) | |||||
Absent | 0 | 21 | 37 | 15 | 8 |
Present | 1 | 9 | 10 | 2 | 1 |
Perineural spread (Pn) | |||||
Absent | 0 | 24 | 41 | 17 | 8 |
Present | 1 | 6 | 6 | 0 | 1 |
Distance towards CRMa,b | |||||
>3 mm | 1 | 22 | 35 | 17 | 8 |
1 to 3 mm | 0 | 4 | 5 | 0 | 0 |
<1 mm | 0 | 4 | 6 | 0 | 1 |
Local recurrence | |||||
Negative | 1 | 28 | 40 | 14 | 9 |
Positive | 0 | 2 | 6 | 2 | 0 |
Death of disease | |||||
Negative | 0 | 23 | 22 | 12 | 8 |
Positive | 1 | 7 | 24 | 4 | 1 |