Key result
Cardiac MRI successfully characterized a suspected right atrial mass as a prominent crista terminalis, a normal anatomical variant, in a 32-year-old woman.
Case Report (n=1)
No
Cardiac MRI is a valuable imaging modality for differentiating normal anatomical variants, such as a prominent crista terminalis, from true intracardiac masses when echocardiography is ambiguous.
Cardiac MRI may avert misdiagnosis of normal variants as masses on echocardiography; leaves open need for prospective series before routine adoption.
This case report describes a patient in whom echocardiography showed borderline left ventricular hypertrophy and a mass adjacent to the right atrial wall. This naturally caused some concern as the differential diagnoses included that of a right atrial myxoma and further investigations were organised. A subsequent cardiac MRI revealed this thickening to be a prominent crista terminalis. The crista terminalis is a variant of normal anatomical structures within the right atrium, which mimics an atrial mass.
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Salim et al. (2016) conducted a case report in Prominent crista terminalis (n=1). Cardiac MRI vs. Echocardiography was evaluated on Characterization of right atrial mass. Cardiac MRI successfully characterized a suspected right atrial mass as a prominent crista terminalis, a normal anatomical variant, in a 32-year-old woman.
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