CTICasesPatent Ductus Arteriosus (PDA) and Necrotizing Enterocolitis (NEC)
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Imaging findings
Saggital CT and 3D reformats in a premature infant demonstrate a large patent ductus arteriosus (PDA) connecting the aorta to a markedly dilated pulmonary artery, accompanied by a relatively small descending aorta. Chest and abdominal radiographs reveal increased shunt vascularity in the lungs, alongside branching portal venous gas structures in the upper abdomen and pneumatosis intestinalis within the bowel wall.
Key takeaways
A patent ductus arteriosus is a common congenital vascular shunt in premature infants that can lead to hypoxic respiratory failure and prominent shunt vascularity. Necrotizing enterocolitis (NEC) is a serious abdominal complication of prematurity that can be recognized on abdominal radiographs by the presence of portal venous gas and bowel wall pneumatosis.
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