Key result
Caseous calcification of the mitral annulus presents as a rare, generally benign round or semilunar hyperdense mass in the posterior annulus that mimics other intracardiac masses.
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Differentiate this benign mass from tumors on CT to avoid misdiagnosis; leaves open its prevalence and natural history.
Alegría et al. (2012) studied this question. Caseous calcification of the mitral annulus presents as a rare, generally benign round or semilunar hyperdense mass in the posterior annulus that mimics other intracardiac masses.
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