RESUMO
Coronary insufficiency represents the first mortality cause for men over 45 years old and women over 65 years old. In the left main coronary artery stenosis the prognosis is more reserved especially in the case of unstable angina. We report 3 cases of left main coronary artery stenosis. It concerns three women of 49, 55 and 69 years old. They were menopaused, having hyperlipaemia and hypertension. The 69 years old woman has also type II diabetes mellitus. They were admitted for an unstable angina with a normal cardiovascular exam and a normal percritic electrocardiogram. A coronarography was carried out on all three patients highlighting in the 69 years old woman's case an isolated left main coronary artery stenosis; in 49 years old woman's case a distal tight left main coronary artery stenosis with two tight stenosis of left descending artery; and in 55 years old woman's case two tight stenosis of distal left main coronary artery and medial left descending artery. All three patients had a successful bypass graft surgery. In conclusion women's left main coronary artery stenosis with unstable angina can evolve well if it is well taken care of and at an early stage