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Updated: May 31, 2026

Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
Published on: June 11, 2019
Late infective endocarditis of an atrial septal occluder device presenting as a cystic mass
Jeroen Walpot1, Bram Amsel, Inez Rodrigus
1Department of Cardiology, Admiraal De Ruyter Ziekenhuis, Vlissingen, The Netherlands. j.walpot@adrz.nl
Abstract:
We report an atypical echocardiographic presentation of a vegetation in a patient with late infective endocarditis of an atrial septal defect (ASD) occluder device. Transesophageal echocardiography demonstrated a penduculated mass attached to the left atrial side of the occluder device. This mass presented as an oscillating echo free area surrounded by a membrane attached to the device by a thin stalk. At time of surgical excision, the lesion did not present as a spherical cyst. It was assumed that the content of the echo free mass had already emptied into the left atrium. Histopathology diagnosed the mass as a vegetation. The contribution of contrast echocardiography to the evaluation of intracardiac masses is briefly discussed.
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