Classification | Criteria |
Complete response | PET-negative nodes of any size or PET-positive nodes that have regressed to normal size |
Partial response | Reduction in SPD of 6 largest masses by ≥50% (and no growth in other nodes); PET-positive at previously uninvolved site or PET-negative |
Stable disease | PET-positive at sites of previous involvement but not at new sites; no change in size of nodes on CT |
Progressive disease | Appearance of new lesions >1.5 cm or 50% growth in SPD of existing nodes; PET-positive nodes |