How a Myxoma Can Block Blood Flow in the Heart
A myxoma in the left atrium often grows from a stalk and swings freely with the flow of blood. As it swings, the myxoma may move in and out of the nearby mitral valve, which opens from the left atrium into the left ventricle. This swinging motion may plug and unplug the valve over and over again, so that blood flow stops and starts intermittently.
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