Table 3.
Lymphatic metastasis related to tumor size with or without ulcer (%)
| Ulcer diameter(cm) |
m Ca (n = 275) |
sm Ca (n = 245) |
||
| With ulcer(n = 111) | Without ulcer(n = 164) | With ulcer(n = 110) | Without ulcer(n = 135) | |
| ≤ 2 | 0 (0/43) | 0 (0/79) | 16.7 (3/18) | 3.1 (1/32) |
| ～3 | 0 (0/21) | 2.4 (1/42) | 20.8 (5/24) | 21.1 (8/38) |
| ～4 | 5.3 (1/19) | 0 (0/15) | 20.0 (4/20) | 24.0 (6/25) |
| ～5 | 6.7 (1/15) | 0 (0/14) | 18.8 (3/16) | 18.2 (4/22) |
| ≥ 6 | 1 (1/13) | 0 (0/14) | 43.8 (14/32) | 33.3 (6/18) |
| Total No | 2.7 (3/111)a | 0.6 (1/164) | 26.4 (29/110)a | 18.5 (25/135) |
a
P < 0.05, vs ulcer subgroup in each group.