The full form of DVT is Deep Vein Thrombosis. It refers to a blood clot that forms deep inside a vein, often in your lower leg or thigh. However, it can also occur in other parts of the body Deep vein thrombosis (DVT, also called venous thrombosis) occurs when a thrombus (blood clot) develops in veins deep in your body because your veins are injured or the blood flowing through them is too sluggish. When a blood clot forms in a vein deep inside your body, it causes what doctors call deep vein thrombosis (DVT). This is most likely to happen in your lower leg, thigh, or pelvis. Distal DVT: Distal DVT involves the formation of a blood clot in the deep veins below the knee, commonly in the calf muscles. Distal DVT is generally considered less severe than proximal DVT.
