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Table 1 Evanscriteria for pathologic response following neoadjuvant therapy

From: Pathologic response with neoadjuvant chemotherapy and stereotactic body radiotherapy for borderline resectable and locally-advanced pancreatic cancer

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