Echocardiographic detection of mobile right atrial thrombus

Mobile right atrial thrombus is a rare echocardiographic diagnosis with important implications on further management. We report a case of 50-year-old woman with deep vein thrombosis of her left lower limb, who was found to have a large mobile serpiginous right atrial thrombus on both two-dimensional echocardiography (2DE) and transoesophageal echocardiography (TEE). She developed acute pulmonary embolism within thirty-six hours of diagnosis and subsequently underwent successful pulmonary embolectomy. This case demonstrates the usefulness of echocardiography as a non-invasive tool in the investigation of suspected pulmonary thromboembolism. The detection of right atrial thrombus mandates serious consideration for prompt surgical action.