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    Pulmonary embolism - Symptoms and causes - Mayo Clinic

    • A pulmonary embolism is a blood clot that blocks and stops blood flow to an artery in the lung. In most cases, the blood clot starts in a deep vein in the leg and travels to the lung. Rarely, the clot forms in a vein … 展开

    Symptoms

    Pulmonary embolism symptoms can vary greatly, depending on how much of your lung is involved, the size of the clots, and whether you have underlying lung or heart disease. Commo… 展开

    Mayo Clinic
    Causes

    A pulmonary embolism occurs when a clump of material, most often a blood clot, gets stuck in … 展开

    Mayo Clinic
    Risk Factors

    Although anyone can develop blood clots that result in a pulmonary embolism, certain factors can increase your risk. 展开

    Mayo Clinic