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Updated: Jul 2, 2025

Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
Published on: June 11, 2019
Multimodality Imaging of a Mass Arising from a Cor Triatriatum Sinister Membrane
Tomas V Gonzalez1, Candice A Bookwalter1, Christopher J François1
1From the Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905.
Abstract:
Cor triatriatum sinister is a rare entity characterized by a membrane within the left atrium and posterior to the atrial appendage. This defect may cause obstructive symptoms analogous to mitral stenosis. The authors present a case of an incidentally detected enhancing mass originating from a cor triatriatum sinister membrane, with imaging characteristics most suggestive of myxoma. Keywords: MR Imaging, Cardiac, Left Atrium, Congenital, CT Angiography, Echocardiography Supplemental material is available for this article.
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