Fig. 2

Dx, M1, M6 and EOT + 1y FDG PET-CTs for three representative cases that received 6 months of standard treatment and maintained cure. Three-dimensional anterior and transverse slices at the level of horizontal blue line. a Residual cavity with moderate FDG avidity at M6 improves over the next year, leaving nodular infiltrate with mild activity. b New nodule with high intensity seen at M6. It resolved at EOT + 1y, but two new nodules have formed. c All lesions resolved at M6, but three new areas with small nodular and tree-in-bud infiltrates seen at EOT + 1y