A patient ill with thrombophlebitis of his lower limbs had chest pain, blood spitting, progressing respiratory insufficiency that led to his death. Autopsy diagnosed multiple lung infarctions. What is the most probable cause of their development?

Answer options

1. Thrombosis of pulmonary artery branches
2. Thromboembolism of pulmonary artery branches
3. Thromboembolism of bronchial arteries
4. Thrombosis of pulmonary veins
5. Thrombosis of bronchial arteries

Explanation

Pulmonary embolism (thromboembolism) is a blockage of an artery in the lungs by a substance that has moved from elsewhere in the body (deep veins of the lower limb) through the bloodstream (embolism).