Fig. 1

Radiological manifestations of lung nodules in IgG-RD patients via chest computed tomography scans. a A single large solid nodule, with irregular margin, was detected in the right lung. Thickening of pleura and tracheal traction were also noted. b Multiple small and solid lung nodules were scattered in both lungs. c A single, small, and solid nodule was shown in the right lung apex. Lobulation, spiculation, and pleural indentation of the nodule can be noted. Thickening of pleura and the bronchial wall can also be observed. d/e Multiple solid and ground-glass nodules were shown in both lungs