High-resolution chest computed tomography in a 16-year old girl affected by granulomatosis with polyangiitis (GPA). The image shows multiple nodules and regions of consolidation of variable size, irregularly marginated with peribronchovascular distribution. Cavitations are demonstrated in several nodules, the largest in the right lung (6.5×4.5 cm). Diffuse alveolar opacities are consequence of haemorrhages