Basketball Hall of Famer Chris Bosh revealed during an interview with Sam Yip of HoopsHype that he nearly died last January after suffering a pulmonary embolism. I had another pulmonary embolism. Yeah, yeah, this past year. The Mayo Clinic defines a pulmonary embolism as follows:"A pulmonary embolism is a blood clot that blocks and stops blood flow to an artery in the lung. "Because one or more clots block blood flow to the lungs, pulmonary embolism can be life-threatening.