Table 3.
Histopathological analysis
| ERH (n=64) | LH (n=34) | p-value | |
| T stage pT1 pT2 pT3 pT4 |
1 (1.6%) 6 (9.4%) 34 (53.1%) 23 (35.9%) |
4 (11.8%) 2 (5.9%) 21 (61.8%) 7 (20.6%) |
0.076 |
| N stage pN0 pN1 pN2 |
37 (57.8%) 19 (29.7%) 8 (12.5%) |
19 (55.9%) 13 (38.2%) 2 (5.9%) |
0.481 |
| M stage pMx pM1 |
62 (96.9%) 2 (3.1%) |
32 (94.1%) 2 (5.9%) |
0.608 |
| Differentiation Poorly differentiated Moderately differentiated Well differentiated |
13 (20.3%) 51 (79.7%) 0 (0%) |
6 (17.6%) 28 (82.4%) 0 (0%) |
1.000 |
| Dukes classification A B C D |
7 (10.9%) 30 (46.9%) 27 (42.2%) 0 (0%) |
6 (17.6%) 13 (38.2%) 15 (44.1%) 0 (0%) |
0.563 |
| Mean length of bowel resected in cm | 47 (SD: 17) | 28 (SD: 15) | <0.001 |
| Mean length of tumour in mm | 49 (SD: 22) | 41 (SD: 17) | 0.061 |
| Median length for clear margins (range) in cm | 6.5 (1.5–25.0)* | 6.0 (1.1–30.0) | 0.249 |
| Margins classified as R1/R2 | 1 (1.6%) | 0 (0%) | 1.000 |
| Median number of lymph nodes analysed (range) | 16 (5–39) | 13 (4–23) | 0.051 |
| Lymph node analysis Patients with ≥12 nodes evaluated Patients with <12 nodes evaluated |
50 (78.1%) 14 (21.9%) |
20 (58.8%) 14 (41.2%) |
0.044 |
ERH = extended right hemicolectomy; LH = left hemicolectomy; SD = standard deviation
*n=63 (The margin was involved for one patient so no length was reported for this case.)