A Calcified Amorphous Tumor Originating in the Aortic Valve Cusp

Calcified amorphous tumor (CAT) of the heart is a rare nonneoplastic cardiac tumor. The clinical features of cardiac CATs resemble those of other cardiac tumors that include symptoms related to obstruction or embolization. Cardiac CATs have been found in all chambers of the heart but predominantly present in the left ventricle, mitral annulus, and mitral valve. Here we report an extremely rare case of CAT originating in the aortic valve cusp, which may be related to aortic annular calcification and aortic valve stenosis. We successfully treated this patient with tumor resection and aortic valve replacement.