title: Spontaneous return of patency in a completely occluded coronary artery.
abstract: We observed a 56-year=old man in whom an occluded right coronary artery was observed to be widely patent on a subsequent angiogram 40 months later. This "regression," which occurred without a change in his risk factors, shows that manipulation of risk factors can be proven to be a cause of regression only in controlled studies.
mesh_terms: D017023:Coronary Angiography; D003327:Coronary Disease / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*; D003331:Coronary Vessels / Q000473:pathology; D006327:Heart Block / Q000150:complications; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications; D012075:Remission, Spontaneous; D012306:Risk; D012907:Smoking / Q000150:complications