Clinicopathological characteristics and TNM stage of postcolonoscopy colorectal cancers (PCCRCs) versus prevalent CRCs
| PCCRC (n=147) | Prevalent CRC (n=5156) | p Value | |
|---|---|---|---|
| Proximal location,* n (%) | 87 (60.0) | 1634 (31.9) | <0.001 |
| Mean (SD) tumour size,* cm | 3.7 (1.8) | 4.4 (2.2) | <0.001 |
| Flat macroscopic appearance,* n (%) | 66 (45.2) | 1379 (27.7) | <0.001 |
| ≥50% mucinous histology, n (%) | 18 (12.2) | 433 (8.4) | 0.099 |
| Differentiation,* n (%) | |||
| Poor | 36 (31.0) | 1066 (24.4) | 0.102 |
| Moderate/well | 80 (69.0) | 3301 (75.6) | |
| TNM stage,* n (%) | |||
| Early | 79 (55.6) | 2499 (49.7) | 0.162 |
| I | 41 (28.9) | 1060 (21.1) | |
| II | 38 (26.8) | 1439 (28.6) | |
| Advanced | 63 (44.4) | 2531 (50.3) | |
| III | 43 (30.3) | 1233 (24.5) | |
| IV | 20 (14.1) | 1298 (25.8) |
*Data on location, size, macroscopic appearance, differentiation and stage were unavailable in 1%, 10%, 3%, 16% and 3% of cases, respectively, due to retrospective study design.
CRC, colorectal cancer.