- Venous thrombosis is the formation of a blood clot in a vein. Deep venous thrombosis (DVT) means that a blood clot has formed in one of the large veins that are far below the skin.
- The chest is the area where the heart and lungs are located. These organs are protected by the rib cage and breastbone. Many different conditions can cause pain in the chest.
- Most people use the term "leg" to mean the entire area between the top of the thigh and the ankle. Pain can occur in this part of the body for many reasons.
