PMC9609878_01
Chest computed tomography images of a 53-year-old man with a tracheal bronchus (TB) on the right side (Type II), approximately 2 cm above the carina (a-d). This bronchial branch governed the right upper lobe. No lesions were observed in the lung parenchyma (a). TB was discovered incidentally during routine health check.
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F2
The most common tracheal bronchus abnormality was type II (75.1%) [Figure 2].
Chest computed tomography images of a 5-year-old girl with a tracheal bronchus on the right side, at the site of the carina (type III) (a). There was stenosis at the main (blue arrow heads), right (yellow arrow heads), and left (red arrow heads) pulmonary arteries (b and c). right atrium, right ventricle, left ventricle, Ao, aorta, pulmonary artery, and superior vena cava.
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F3
Cardiovascular diseases accounted for the majority (75.0%), they were quite diverse; however, most of them were congenital heart diseases (14/32 = 43.7%), followed by stenosis of the bilateral pulmonary arteries, accounting for 15.6% (5/32) [Figure 3]; other pathologies and no associated abnormalities accounted for 12.5% each.