A Man with an Usual Cause of Mitral Insufficiency

Cardiac calcified amorphous tumors (CAT) are rarely encountered nonneoplastic tumors that may arise within any cardiac chamber. Involvement of the mitral valve causing pathology is even less frequently reported. We report the case of a CAT arising on the posterior mitral valve leaflet resulting in chordal rupture and severe mitral insufficiency. Multi-modality imaging was performed before definitive diagnosis through histology. We review the morphological features encountered in our case to highlight the diagnostic difficulties and raise awareness of this peculiar pathology.