Intracardiac thrombus may develop as a consequence of multiple underly
ing cardiac disorders. Other systemic disorders may predispose formati
on of thrombus within the heart, or the heart may be the site of embol
i in transit - thrombus originating elsewhere and traveling through th
e heart to the pulmonary or arterial circulation. Part V of this five-
part series on intracardiac thrombus will focus on ''migrating thrombi
,'' miscellaneous systemic conditions associated with intracardiac thr
ombi, and echocardiographic detection of intracardiac thrombus.