A Rare Presentation of Encapsulated Left Ventricular Thrombus

Left ventricular thrombus formation is not an uncommon complication. There are a variety of reasons for this, for example, myocardial infarction, aneurysm formation and hypercoagulability. This usually has different fates; the most serious of which is propagation and embolization causing distal organ dysfunction. Thrombus formation appearance on echocardiography can sometimes give an idea of whether this is acute, subacute or chronic. In this article, we present a rare case in which large thrombi were noted on transthoracic echocardiography to be fully encapsulated within the left ventricle. It is unclear whether this phenomenon represents chronicity or whether this has consequential clinical impacts of significance. To our knowledge, this has only rarely been reported in the literature. We present an in-depth discussion of the presentation along with reported postulated mechanisms that might have a role in encapsulation per se.