PULMONARY EMBOLISM, X_RAY. PULMONARY EMBOLISM, X_RAY Pulmonary embolisms by bilateral thrombuses _ Thoracic x_ray is the brutal obstruction by the thrombus of the pulmonary artery or one of its branches here, of the two lungs. The thrombus most often arises from a deep vein of the limbs or the pelvis deep vein thrombosis. Deep vein thrombosis is the formation of thrombus at the level of the leg deep veins. It is more frequent among persons who remain sitted long hours at work. It is also the pat