Table 1.
Categorisation of pathological prognostic factors in Dukes' B colon cancer
| Factor | Category | No of patients (%) |
| Extent of spread beyond muscularis propria | Slight (<2 mm) | 72 (26.9) |
| Moderate (3–5 mm) | 110 (41.0) | |
| Extensive (>5 mm) | 86 (32.1) | |
| Peritoneal involvement | Absent | 52 (19.4) |
| Inflammatory | 105 (39.2) | |
| Present | 61 (22.8) | |
| With ulceration | 50 (18.7) | |
| Venous invasion | Not evident | 153 (57.1) |
| Submucosal | 24 (9.0) | |
| Extramural | 91 (34.0) | |
| Margin involvement | Not involved | 232 (86.6) |
| Inflammatory | 28 (10.5) | |
| Present | 8 (3.0) | |
| Tumour perforation | Absent | 257 (95.9) |
| Present | 11 (4.1) | |
| Tumour differentiation | Well | 56 (20.9) |
| Moderate | 157 (58.6) | |
| Poor | 55 (20.5) | |
| Adjacent organ involvement | Absent | 238 (88.8) |
| Present | 30 (11.2) |