Special Considerations in Pulmonary Embolism: Clot-in-Transit and Incidental Pulmonary Embolism

This article describes 2 relatively rare, but complex situations in pulmonary embolism (PE): clot-in-transit (CIT), incidental PE (IPE). CIT describes a venous thromboembolism that has become lodged in the right heart. CIT is associated with high mortality and presents unique challenges in management. Incidental PE (IPE) describes PE diagnosed on imaging performed for another indication. The treatment is complex because there is often a disconnect between the PE severity on imaging and lack of severity of the clinical presentation. We summarize the available literature and aid clinicians as they manage patients with PE across the clinical severity spectrum.