Case report
Intracardiac extension of a lung tumor causing left ventricular inflow obstruction

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A patient with the diagnosis of small cell lung cancer had syncopal episodes. The tumor was found to invade the right upper pulmonary vein with extension into the left atrium. The mass was protruding across the mitral valve producing ball-valve blockade. In this report the echocardiographic signs of a primary lung tumor with intraatrial extension causing left ventricular inflow tract obstruction are described.

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