Fig. 7

SBRT-treated lung cancer demonstrates local recurrence at 35 months: a) Isodose multiplanar images for planning. b) pre-SBRT CT shows a solid nodule. c) 8 mo post-SBRT, the nodule has not changed significantly in size, however there is new surrounding GGO. d) 13 mo post-SBRT the lesion is stable and there is surrounding patchy GGO and peribronchial consolidation. e) 17 mo post-SBRT, there is slight increase of the nodule size with stable patchy GGO and consolidation. f) 26 mo post-SBRT, there is further mild interval increase of the nodule size and slight improvement of the surrounding GGO and consolidation. g) 31 mo post-SBRT, there is further interval increase of the lesion size (now a mass) and increased density of the adjacent radiation changes. h) 35 mo post-SBRT there is further increase of the primary lesion partially obscured by the surrounding radiation changes which demonstrate increased density. Local recurrence was established at this point. i) 39 mo post-SBRT, there is further increase of the primary lesion which is now inseparable for surrounding radiation changes which demonstrate further increased density