[18F]FDG-PET/CT image of a 74-year-old male patient, 4 months after the initial surgery. The [18F]FDG-PET/CT performed to assess for suspected recurrence showed increased uptake of [18F]FDG in the left axillary lymph nodes (SUVmax = 4.2), right hilar lymph nodes (SUVmax = 17.5) and lymph nodes in the anterior mediastinum, behind the sternum (SUVmax = 3.3). The previously performed CT had not correctly assessed the mediastinal lymph nodes due to their small size. FDG-PET/CT, fluorodeoxyglucose-positron emission tomography/computed tomography; SUVmax, maximum standardized uptake value.