Related Experiment Video
Updated: May 15, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Adult presentation with a bilobed membranous ventricular septal aneurysm
David Horne1, Christopher W White, G Scott Mackenzie
1Department of Surgery, University of Manitoba, Winnipeg, Manitoba, Canada. drhorne@shaw.ca
Abstract:
Membranous ventricular septum aneurysm (MVSA) is an uncommon cardiac abnormality primarily associated with the spontaneous closure of a small membranous ventricular septal defect in childhood. Diagnosis of an idiopathic MVSA in an adult is exceedingly rare. We report on a man, aged 38 years, with a bilobed MVSA diagnosed by transesophageal echocardiography and gated computed tomography, with separate aneurysm sacs extending into the right atrium and right ventricle.
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