Fig. 3
From: MDCT angiographic findings of various congenital pulmonary artery anomalies in pediatric patients
4-year-old boy with respiratory distress, situs inversus and pulmonary atresia. a Left ventriculography shows the right-sided aortic arch and dilated great arteries. b Right ventriculography shows pulmonary atresia. c Right internal mammary angiography: hypertrophied artery supplying systemic collaterals to the right lung. All angiography series (not shown) failed to delineate the pulmonary arteries. d CTA clearly shows the pulmonary arteries and their diameters in addition to collaterals (arrows) and hypertrophied internal mammary arteries (black arrows). Based on CTA findings, the patient was referred for Glenn surgery