4 doctors weighed in:

My friend died of blood clot in the lungs. What causes this?

4 doctors weighed in
1 doctor agrees

In brief: If you mean

Pulmonary embolism, it is a blood clot that forms usually in the deep leg vein, sometimes in the pelvic veins, that breaks off and travels to the pulmonary artery.
If the clot is big enough, it can cause low oxygen and low blood pressure, sometimes to the point of sudden death.

In brief: If you mean

Pulmonary embolism, it is a blood clot that forms usually in the deep leg vein, sometimes in the pelvic veins, that breaks off and travels to the pulmonary artery.
If the clot is big enough, it can cause low oxygen and low blood pressure, sometimes to the point of sudden death.
Dr. Robert Uyeda
Dr. Robert Uyeda
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Dr. Ted King
Phlebology
1 doctor agrees

In brief: Many things

Usually a blood clot in the lung starts out as a deep vein thrombosis in one of the legs.
They can, on occasion, come from other parts of the body though. A clot forms and some or all of it breaks off and travels to the lungs. Many things can increase your risk of blood clots, including an injury, severe illness, cancer, an inherited blood clotting tendency, and prolonged immobility are some.

In brief: Many things

Usually a blood clot in the lung starts out as a deep vein thrombosis in one of the legs.
They can, on occasion, come from other parts of the body though. A clot forms and some or all of it breaks off and travels to the lungs. Many things can increase your risk of blood clots, including an injury, severe illness, cancer, an inherited blood clotting tendency, and prolonged immobility are some.
Dr. Ted King
Dr. Ted King
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