Case report: Thrombus in transit-a cause of impending paradoxical embolism.

Background: A thrombus in transit (TIT) is a life-threatening condition associated with pulmonary embolism (PE). While TIT was once considered a rare diagnosis, its emergence has risen in recent years mainly through advancement in medical technology. Rare cases of a thrombus in transit crossing a patent foramen ovale in the context of pulmonary embolism have been reported.