Pericardial mesothelial inclusion cysts versus chylothorax in a patient with high chest tube output postoperatively

Mesothelial inclusion cysts are rare and even more rare when encountered in and around the pericardium. This case report highlights the postoperative management of a patient with this rare disease, in combination with the development of a chylothorax after mitral valve surgery and the undefined relationship between the two disease processes in the setting of cardiofaciocutaneous syndrome.