[The importance of the cystic medio-necrosis of aorta and great arteries in cardio-vascular surgery (author's transl)].

: Based on the experiences of 14 observations a correlation between clinical picture and histological damage of aortic wall in medio-necrosis Erdheim-Gsell is tried. In the preoperative phase the definitive diagnosis is seldom possible. Atypical pathological findings at the aorta or great arteries must be suspected to be caused by medio-necrosis Erdheim-Gsell.