PET - Lung Cancer
63-year-old male with lung cancer. Tumor removed from right upper lobe several months ago.CT scan showed new lesion in left lung.Whole-body FDG PET scan found focal FDG accumulation in left lung lesion. In addition, several other lesions unsuspected by CT were seen in right lung and mediastinal lymph nodes.Conventional treatment based on CT would have been thoracotomy to resect left lung lesion. After PET found others areas of focal FDG uptake, treatment was switched to chemotherapy. The lesions could still be seen on follow-up CT scan after chemotherapy, but a second FDG study (not shown) indicated the FDG uptake had returned to normal, avoiding possible resection.