Introduction

Calcified amorphous tumor (CAT) is a rare and benign pathology which is composed of calcified nodules on a background of a degenerative and inflammatory amorphous fibrous material.[1-3] Although the pathogenesis of cardiac CAT is unknown, abnormal calcium-phosphorous metabolism, particularly in renal failure, is suspected. Differential diagnosis includes benign/malignant cardiac tumors such as a myxoma, teratoma, or rhabdomyoma, thrombosis, and vegetations.

Herein, we report a 67-year-old case who underwent mitral valve surgery through a transseptal incision with a favorable outcome. During operation, we observed that the anterior leaflet of the mitral valve and its subvalvular apparatus were calcified and presented as a giant tumor (Figure 1). After resection of the calcified leaflet, the annulus of the mitral valve was reconstructed using a pericardial patch, and the valve was successfully replaced with a mechanical prosthesis.

Declaration of conflicting interests

The authors declared no conflicts of interest with respect to the authorship and/or publication of this article.