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The Journal of Thoracic and Cardiovascular Surgery, Vol 103, 471-474, Copyright © 1992 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association
TE Samdarshi, EF Mahan 3d, NC Nanda, FW Guthrie Jr, IJ Bernstein and JW Kirklin
We report a case of multicentric left ventricular myxomas with prolapse of
one myxoma into the left atrium during ventricular systole that mimicked a
left atrial tumor. The transthoracic echocardiogram showed large masses in
the region of the mitral valve leaflets consistent with vegetations or
tumors. A computed tomographic scan of the chest demonstrated two distinct
left atrial masses, one of which appeared to prolapse from the left atrium
into the left ventricle. Intraoperative transesophageal echocardiography
showed a large pedunculated mass moving between the two left-sided cardiac
chambers with intermittent trapping of the mass in the left atrium. The
mass was attached to the left ventricular posteromedial papillary muscle by
a long stalk. Another adjacent large ventricular mass was also noted in the
left ventricle. These findings were confirmed at operation, which also
demonstrated a third small tumor arising from the atrial aspect of the
posterior mitral leaflet.
ARTICLES
Transesophageal echocardiographic diagnosis of multicentric left ventricular myxomas mimicking a left atrial tumor
Division of Cardiovascular Disease, University of Alabama, Birmingham 35294.
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