A pulmonary embolism was the immediate cause of death for actor and comedian Catherine O’Hara. It’s a serious condition in which a blood clot lodges in the lungs.To explain what a pulmonary embolism is and who is most at risk, CNN spoke with wellness expert Dr. Leana Wen. https://t.co/geyDwfJvIX ...

Catherine O'Hara cause of death confirmed as pulmonary embolism https://t.co/6ycTw0jmBX ...