Number of pathological lymph node metastases | |
0–1 | 36 |
≥ 2 | 15 |
Site of pathological lymph node metastases | |
Level IV or V | 3 |
Other level or no metastasis | 48 |
Pathological response based on the Oboshi and Shimosato classification | |
Grade 0–1 | 0 |
Grade 2a | 8 |
Grade 2b | 22 |
Grade 3 | 16 |
Grade 4 | 5 |