Fig. 2

Pulmonary lesions on HRCT. a The mosaic sign in the left lung of a patient with stenosis of the left main PA. b Pulmonary infarction of the right middle lobe in a patient with severe stenosis of the right main PA. c Mild pleural effusion on the left side in a patient with pulmonary trunk dilation and pulmonary hypertension. d Bronchiectasis in the right lung in a patient with stenosis of the right main PA and its distant branches. Ground-glass opacity (e) in the right upper lobe of a TA patient with right upper pulmonary arterial branches involvement (f). Cavitation (g) and mass-like consolidation (h) in the patient with severe stenosis of the right main PA (i)