Figure 1.

Imaging findings of lung cancer. FDG-PET CT showed a tumor with high uptake in the right upper lung (maximum SUV, 13.2) (A) and the T8 vertebra, which indicated bone metastasis (yellow arrow) (B). Axial CT showed an irregular tumor in the right upper lung (C). Eleven months after starting pembrolizumab, CT showed that the primary lung cancer lesion had decreased in size (D). FDG: ¹⁸F-fluorodeoxyglucose, PET: positron emission tomography, CT: computed tomography, SUV: standardized uptake value