ABSTRACT
Lung cancer is the most common source of cardiac metastases, being the primary tumor in approximately 36% of cases. It may invade the pulmonary veins and cause obstruction and pulmonary venous hypertension (Figure 11.4) but it more commonly involves the pericardium and epicardium indicating retrograde lymphatic spread, as most of the lymphatics that drain the pericardial cavity are located on the visceral pericardium. Secondary cardiac tumors can affect any region of the heart but the great majority of them are pericardial.
