Pulmonary embolism
blockage of the main artery of the lung or one of its branches by a substance that has travelled from elsewhere in the body / From Wikipedia, the free encyclopedia
A pulmonary embolism is a clot of material (an emboli) that blocks blood from getting to the lungs. It is usually caused by a blood clot that starts somewhere else in the body and travels to the lungs. However, it can also be caused by clumped cancer cells, fat, or bone. Rarely, while giving birth, a woman can get a clot of amniotic fluid.[1]