ABSTRACT
Calcium in the heart is most frequently located in coronary arteries or in aortic or mitral valve leaflets or “rings.” The occurrence of calcific deposits in mural thrombi indicates that thrombosis occurred in the distant past. The right ventricular stones consisted primarily of calcified material, but dense fibrous tissue surrounded the calcific deposits. The endocardium of the right ventricle, both beneath and between the stones, was extensively but focally thickened. The left ventricular wall was of normal thickness and its cavity of normal size. No scars or areas of softening were present in the left ventricular myocardium. The origin of the stones in the right ventricle is uncertain, but at least two possibilities exist. The endocardial thickening in the right ventricle may represent organization of flat thrombi.
