Findings of conventional imaging, FDG-PET/CT and biopsy for individual patients are indicated in the figure. Four of 9 patients with FDG-PET/CT findings suggestive of residual disease developed progressive disease or relapse, 2 of whom had negative biopsies at the time of response evaluation.
+, positive result; -, negative result; ±, indeterminate result
*FDG-PET/CT for Patient 18 was reported to be positive at the time of response evaluation, but negative at the time of retrospective review for this study.
FDG-PET/CT, 18F-labelled–fluorodeoxyglucose positron emission tomography with computerized tomography; PD, progressive disease.