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.
Blood clots may also break away from their original source and cause damage elsewhere in your body. Blood clots that break away from a deep vein thrombosis and travel to your lungs may cause a potentially life-threatening blood clot in the lungs (pulmonary embolism).