Extremely late-onset chronic graft-versus-host disease presenting with bronchiolitis obliterans and pleuroparenchymal fibroelastosis.

A 35-year-old woman experienced left back pain after a 2-h flight. She reported coughing and left back pain 1 day later when she presented to our hospital. Chest computed tomography showed pneumothorax of the left lung, bronchiectasis, thickening of the bronchial wall, nodules, and cavity lesions in both lungs.

IgG4 related lung disease mimicking multiple pleural disseminated lung cancer.

IgG4-related lung disease (IgG4-RLD) can present with various types of radiological findings such as nodule, ground-glass opacity, alveolar interstitial, and bronchovascular involvement. IgG4-RLD generally manifests as mild clinical symptoms, despite evidence from the image findings. Herein we report an asymptomatic patient with IgG4-RLD mimicking multiple pleural disseminated lung cancer.