title: Clinics in diagnostic imaging (155). Incidental PDA with secondary pulmonary arterial hypertension.
abstract: We report the case of a 70-year-old man with an asymptomatic large patent ductus arteriosus (PDA) incidentally detected on triple-rule-out computed tomography (CT). CT clearly demonstrated a vascular structure connecting the descending thoracic aorta to the roof of the proximal left pulmonary artery, consistent with a PDA. Secondary pulmonary arterial hypertension was also evident on CT. The patient was eventually diagnosed with acute coronary syndrome and was successfully treated with coronary artery bypass graft surgery and concomitant patch closure of the PDA. This article aims to outline the imaging features of PDA and highlight the information provided by CT, which is crucial to treatment planning. The pathophysiology, clinical manifestations and closure options of PDA are also briefly discussed.
authors.forename: May San
authors.initials: MS
authors.lastname: Mak
authors.forename: Ching Ching
authors.initials: CC
authors.lastname: Ong
authors.forename: Edgar Lik Wui
authors.initials: EL
authors.lastname: Tay
authors.affiliation: Department of Diagnostic Imaging, National University Hospital, 5 Lower Kent Ridge Road, Singapore 119074. lynette_ls_teo@nuhs.edu.sg.
authors.forename: Lynette Li San
authors.initials: LL
authors.lastname: Teo
mesh_terms: D000368:Aged; D001013:Aorta, Thoracic / Q000000981:diagnostic imaging; D004374:Ductus Arteriosus, Patent / Q000150:complications* / Q000000981:diagnostic imaging*; D004452:Echocardiography; D006331:Heart Diseases / Q000151:congenital / Q000000981:diagnostic imaging; D006801:Humans; D006976:Hypertension, Pulmonary / Q000150:complications* / Q000000981:diagnostic imaging*; D007223:Infant; D008297:Male; D009765:Obesity / Q000150:complications; D011651:Pulmonary Artery / Q000473:pathology; D013902:Radiography, Thoracic; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D055815:Young Adult