Unusual appearance of mitral annular calcification mimicking intracardiac tumor prompting early surgery

Cardiology
Mahoto KatoMasafumi Kitakaze

Abstract

Although mitral annular calcification (MAC) is usually easy to diagnose by transthoracic echocardiography, we experienced a rare case with MAC which looked like an intracardiac tumor. The patient who had been on chronic hemodialysis for 20 years was admitted to our hospital because of dyspnea. Transthoracic echocardiography showed a mass with severe calcification on the anterior mitral annulus and mean mitral gradient of 20 mm Hg. Because of the suspicion of the intracardiac calcified tumor that restricted mitral valve motion causing mitral obstruction, she underwent resection of the mass and mitral valve replacement. Pathological findings showed that the mass had a calcified envelope containing liquefied necrotic eosinophilic material with lympocytic infiltrate inside consistent with MAC. We should consider a possibility of MAC when we see a severe calcified mass attached to the mitral annulus in a patient on long-term hemodialysis.

References

Jul 1, 1983·Journal of the American College of Cardiology·I KronzonM L Cohen
Aug 8, 2001·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·D HarpazS Rosenblatt

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Citations

Apr 19, 2011·World Journal of Cardiology·Rui ProvidênciaAntónio Leitão-Marques
Jan 29, 2008·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Giovanni DelucaMatteo Di Biase
Jan 1, 2009·Rare Tumors·Shi-Min YuanJacob Lavee

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