[Stenosis of the left coronary artery: a report on 50 cases (author's transl)].

Stenosis of the left coronary artery differs from other atheromatous lesions by the severity of the affection. It is not a rare condition as it occured in 50 out of 750 patients. Clinical and electrocardiographic signs are not truly specific and coronarography is essential for diagnosis even though this procedure carries a certain risk of accidents (2%). At a time when medical and surgical treatment of coronary insufficiency is being compared, stenosis of the left coronary insufficiency is being compared, stenosis of the left coronary artery definitely required operative intervention which improves both functional prognosis and mortality.