See also: List of states and territories of the United States. This table includes abbreviations for three independent nations related to the United States through Compacts of Free Association, and other comparable postal abbreviations, including those now obsolete. Codes and abbreviations for U.S. states, territories and other regions.
Pulmonary embolism is the sudden blockage of a major blood vessel (artery) in the lung, usually by a blood clot . In most cases, the clots are small and are not deadly, but they can damage the lung. But if the clot is large and stops blood flow to the lung, it can be deadly.
The most common place for a clot is in the leg. You may have swelling, pain and redness in the calf or behind. the knee. A more rare site for clotting is in the lungs, which makes it hard to breathe and can cause chest pain. In. even rarer cases, the clot might occur in the arm or another part of the body.