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Aneurysms of the coronary sinuses of Valsalva and coronary artery aneurysms are uncommon cardiac anomalies, and cases in which these two uncommon lesions occur at the same time are extremely rare. A case of a woman with unstable angina who had a giant aneurysm of the left coronary sinus and multiple coronary artery aneurysms associated with an idiopathic hypereosinophilic syndrome is presented. Her sustained eosinophilia, elevated eosinophilic cationic protein concentration, and pathological findings of eosinophil infiltration of the aortic wall suggested the association of eosinophilia induced vascular injury as the cause of these aneurysms. This is the first such case to survive following surgical treatment.
Keywords: aneurysm; arteritis; coronary sinus; eosinophilia