Abstract
Echocardiography showed that a patient with left atrial myxoma had intermittent ob struction of the left ventricular outflow tract. Obstruction was caused either by the tumor itself or by displacement of the anterior leaflet of the mitral valve into the outflow tract. Outflow tract obstruction, in con tradistinction to inflow tract obstruction, may be a cause of syncope and sudden death in left atrial myxoma.
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