Conditions | LNM- | LNM+ | Metastasis rate |
---|---|---|---|
Absolute indication of EMR or ESDa | 22 | 0 | 0% |
Absolute indication of ESD 1a | 8 | 2 | 20% |
Absolute indication of ESD 2a | 29 | 0 | 0% |
Expanded indicationa | 10 | 4 | 28.57% |
T1b, ≤2 cm, differentiated-type | 25 | 2 | 7.40% |
T1b, ≤2 cm, undifferentiated-type | 21 | 11 | 34.375% |