The differential diagnoses of intracardiac masses include vegetation, thrombus or tumours. Size, shape, location, mobility and attachment of the mass combined with the clinical findings help differentiate etiology. Echocardiography became the gold standard test for the diagnosis of intracardiac masses and later on transesophageal echocardiography (TEE) further improved the accuracy. Magnetic Resonance Imaging (MRI) can identify the amount of fat with a high degree of specificity and can be used to diagnose cardiac lipomas.
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