What causes blood clots. in the lungs?

Blood clots in the lungs, known as pulmonary embolisms, are typically caused by deep vein thrombosis (DVT), where clots form in the deep veins of the legs or other parts of the body and then travel to the lungs. Risk factors for DVT include prolonged immobility, certain medical conditions (like cancer or Heart disease), obesity, and genetic predispositions. Other contributing factors can include surgeries, hormonal treatments, and trauma. When a clot lodges in the pulmonary arteries, it can obstruct blood flow, leading to serious complications.