Table 1 Evans’ criteria for pathologic response following neoadjuvant therapy
Grade | Tumor regression |
|---|---|
I | <10% to no tumor cells destroyed |
II | IIa: 10-50% of tumor cells destroyed |
IIb: 50-90% of tumor cells destroyed | |
III | >90% of tumor cells destroyed |
IIIM: sizable pools of cellular mucin | |
IV | No viable tumor cells |
IVM: Acellular pools of mucin |