Right Atrial Thrombus as a Cause of Acute Pulmonary Embolism: A Case Report

Thrombi mainly form in the left heart chambers, particularly in dilated atria and in the context of atrial fibrillation. The presence of thrombi in the right atrium is uncommon; they are more often the result of peripheral venous circulation emboli, and less frequently, they originate in situ. In Latin America, the incidence of deep vein thrombosis is approximately 1 case per 1,000 people per year, and that of pulmonary embolism is 0.5 cases per 1,000 people per year. This clinical case presents a 64-year-old male patient diagnosed with a serpentine thrombus in the right atrium and dilated right heart chambers, successfully treated with oral anticoagulation.