@burcinc-- Oh okay. So people with pulmonary thrombisis had an embolism at some point, because that blood clot had to reach the lung somehow.
My brother-in-law has a blood clot in his lung. It's not very bad right now and he's just being treated with anticoagulant medication. He keeps going in for check-ups though. He has been told to watch out for shortness of breath and chest pain. Hopefully, the blood clot will dissolve on its own.