The patient from whom I have learned the most: undiagnosed pulmonary emboli are still with us.
D000208:Acute Disease; D004417:Dyspnea / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000000981:diagnostic imaging; D011655:Pulmonary Embolism / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography