Table I.
Clinicopathological factors of 189 CRC cases.
| Clinicopathological factors | T1 CRC, n (n=189) |
|---|---|
| Age (mean ± SD), years | 66.0±10.9 |
| Sex | |
| Female | 63 |
| Male | 126 |
| Tumor size (mean ± SD), mm | 21.0±11.5 |
| Location | |
| Rectum | 46 |
| Colon | 143 |
| Tumor budding | |
| + | 22 |
| − | 167 |
| Lymphatic invasion | |
| + | 45 |
| − | 144 |
| Venous invasion | |
| + | 53 |
| − | 136 |
| Por/Muc component | |
| + | 31 |
| − | 158 |
| Growth type | |
| PG | 123 |
| NPG | 66 |
| Morphology | |
| Depressed | 35 |
| Non-depressed | 154 |
| DR on the superficial layer | |
| + | 36 |
| − | 153 |
| Depth of invasion, µm | |
| <1,000 | 49 |
| ≥1,000 | 140 |
| Kudo's classification of degree of submucosal invasion | |
| sm1a, 1b | 38 |
| sm1c, 2, 3 | 151 |
| MM grade | |
| 2 | 165 |
| 1 | 24 |
| Depth of invasion (mean ± SD), µm | 3,078.0±2,994.4 |
CRC, colorectal carcinoma; DR, desmoplastic reaction; MM, muscularis mucosae; Muc, mucinous carcinoma; NPG, non-polypoid growth; PG, polypoid growth; Por, poorly differentiated adenocarcinoma; SD, standard deviation.