How do you develop a blood clot in your lung?

A blood clot in the lung, also known as a pulmonary embolism, typically forms when a blood clot from another part of the body, such as the legs, breaks loose and travels to the lungs through the bloodstream. This can happen due to factors like prolonged immobility, surgery, certain medical conditions, or genetic predisposition. Once in the lungs, the blood clot can block blood flow, leading to serious complications.