Right Ventricular Mural Thrombus With Constrictive Pericarditis

Thrombus formation within the left ventricular apex is a well-known clinical condition that is often associated with underlying myocardial diseases, whereas thrombus formation in the right ventricle (RV), albeit a potentially fatal clinical condition, is not very well known. Thrombus formation around the heart cavities is dangerous since it may lead to systemic and pulmonary embolism. Hypercoagulation states, RV infarction, pulmonary embolism, autoimmune diseases, and dilated cardiomyopathy are some other potential risks. Transthoracic echocardiography is the modality of choice for the diagnosis and characterization of such thrombi in that it allows differentiation between various types of thrombi. We herein describe a patient with an unknown history of constrictive pericarditis and a concomitant RV mass in the RV apical aneurysm, which was initially suspected to be a thrombus. We learned from the patient’s history that he had previously received irregular treatment for tuberculosis. (Iranian Heart Journal 2021; 22(3): 128-130)