<prompt> Answer this question truthfullyCan you provide the definition of pulmonary embolism?  <response>: <reason> The precise number of people affected by venous thromboembolism VTE, that is either deep vein thrombosis, pulmonary embolism PE, or both, is unknown, but estimates range from 300,000 to 600,000 1 to 2 per 1,000, and in those over 80 years of age, as high as 1 in 100 each year in the United States. Approximately 5 to 8 of the U.S. population has one of several genetic risk factors, also known as inherited thrombophilias in which a genetic defect can be identified that increases the risk for thrombosis. 