What is the definition of "massive pulmonary embolus"?
"Massive PE" is not related to radiographic embolus load but to clinical criteria such as hypotension / cardiogenic shock.
What are the some complications of acute pulmonary emboli?
Pulmonary infarction; right heart strain/failure; death.
The right ventricle is grossly distended (right ventricular cavity larger than left). Bilateral large pulmonary emboli.
Peripheral wedge-shaped opacities in the right middle lobe and left lower lobe in keeping with infarcts.