RESUMO
The angiographic definition of "Myocardial Bridge" universally applies to signify systolic narrowing of a coronary segment by strips of myocardial tissue. The Authors report the clinical history of two patients suffering from effort angina and transient myocardial ischemia, in whom coronary angiography showed no atherosclerotic lesions, but wide systolic kinking of the left anterior descending (LAD) artery, without systolic luminal obstruction. The definition of "Intramural LAD Pathway" has been put off in place of "Myocardial Bridge", making a distinction not simply semantic but between two different angiographic and pathologic pictures. It is very likely indeed that coronary flow impairment, solely systolic in myocardial bridge, takes places mainly during diastole in Intramural LAD Pathway.
