Fig. 1

a Axial CT scan performed on 6/10/10 shows a new subpleural 6 mm left upper lobe nodule. b Follow-up CT performed on 12/10/10 shows interval increase in size of the pleural based left upper lobe nodule representing metastatic osteosarcoma at resection. c Axial CT performed on 3/28/11 shows a new 8 mm nodule in the left lower lobe. d Follow-up axial CT performed on 11/7/12 showed interval decrease in size of the left lower lobe nodule to 3 mm, confirmed to be osteosarcoma at subsequent resection