A pulmonary embolism (PE) occurs when a foreign substance blocks an artery in your lungs, stopping blood flow. It’s usually caused by a blood clot, but can sometimes be due to lipid, air, or tumor ...

A subsegmental pulmonary embolism is a blood clot located on a distal, or distant and less central, branch of the pulmonary arteries. Treatment can depend on symptoms and risk factors. A subsegmental ...

The concept of sudden death—an unexpected fatality that occurs within hours of symptom onset—represents one of medicine’s most alarming phenomena. While these events seem to strike without warning, ...

Medical experts warn that "ghost symptoms" like back pain or mild cramping could be the only warning signs of a ...