n SA Journal of Radiology - Incidental MDCT finding of a subclinical PDA in an adult patient with Eisenmenger syndrome : case report




Patent ductus arteriosus (PDA) comprises 5 - 10% of all congenital cardiac lesions. The incidence of PDA is 1 in 500, although most of these children are asymptomatic. The defect must persist beyond 3 months of age to be considered pathological. The male:female ratio is 1:2 unless the condition is associated with other congenital problems. Most children with PDA are asymptomatic; however, 50% of patients with a large PDA will develop pulmonary hypertension and may eventually develop Eisenmenger's syndrome if left patent.


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