From Mitral Annular Calcification to Calcified Amorphous Tumor.

Calcified amorphous tumor (CAT) is characterized as a non-neoplastic calcified, cardiac mass. A CAT is sometimes detected adjacent to a mitral annular calcification (MAC), suggesting its association with MAC.

A 75-year-old woman with known history of hypertrophic cardiomyopathy was admitted to our hospital because of dyspnea. Echocardiography showed MAC, left atrial enlargement and left ventricular hypertrophy. Picture A shows an echo image recorded 2 years previously, showing a small amount of MAC. Picture B shows an echo image recorded on admission, showing a large amount of MAC. She was treated with diuretics. Four month later, echocardiography showed a mobile calcified mass attached to an MAC (Picture C). Transesophageal echocardiography showed that the high echoic mass was attached to the posterior mitral annulus and was highly mobile (Picture D-F). She was diagnosed with a CAT derived from an MAC. The CAT was surgically resected to prevent embolism (Supplementary material).

Picture.

The authors state that they have no Conflict of Interest (COI).

The mass was fibrin thrombus and fibrous tissue covered by calcium overlying endothelial cells.

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