title: Idiopathic giant right atrial aneurysm.
abstract: A 2-year-old boy with an incidental finding of massive cardiomegaly on a chest X-ray was diagnosed with a giant right atrial aneurysm upon further investigation with echocardiography. The patient underwent successful surgical reduction of the right atrium and closure of the patent foramen ovale to prevent thromboembolic complications and to lower the risk of atrial arrhythmias. The resected atrium had paper-thin walls and pathological features of interstitial fibrosis with endocardial thickening.
authors.affiliation: Department of Pediatrics, Section of Cardiology, Arkansas Children's Hospital, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
authors.forename: Santosh C
authors.initials: SC
authors.lastname: Uppu
authors.forename: Ritu
authors.initials: R
authors.lastname: Sachdeva
authors.forename: Michiaki
authors.initials: M
authors.lastname: Imamura
keywords: Cardiac magnetic resonance imaging; echocardiography; giant right atrial aneurysm