Vascular occlusions occur when a blood vessel becomes blocked, preventing blood from flowing properly. This blockage can be caused by various factors, including blood clots, fatty deposits, or other materials that obstruct the vessel. When blood flow is restricted, it can lead to tissue damage and other serious health issues. Common types of vascular occlusions include deep vein thrombosis (DVT) and pulmonary embolism (PE). DVT occurs when a blood clot forms in a deep vein, often in the legs, while PE happens when a clot travels to the lungs. Early detection and treatment are crucial to prevent complications.