Left ventricular aneurysms are extremely rare in children. A child developed an aneurysm a year after recovering from idiopathic dilated cardiomyopathy. The initial management was conservative. After several years and due to aneurysm enlargement and other complications, the patient underwent successful aneurysm surgical repair with left ventricular aneurysmorrhaphy. We describe our experience treating this child during the course of this disease.