Fig. 3.
Sarcoid-like reaction in a 77-year-old man with non-small cell lung cancer receiving immune checkpoint inhibitor therapy. a, b Axial fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG-PET/CT) image obtained before therapy demonstrate a malignant right pleural effusion. c, d 4 weeks after treatment initiation, numerous intrapulmonary micronodules were detectable in both lungs, predominately right-sided. In addition, enlarged hilar/mediastinal lymph nodes with increased 18F-FDG newly developed, consistent with a sarcoid-like reaction. In contrast, malignant tumor burden resolved completely