Congenital left ventricular apical aneurysm.

An aneurysm of the left ventricular apex was accidently discovered on chest X-ray in an otherwise healthy 3 1/2-year-old-girl. Pre-operatively performed heart catheterization and ciné-angiography were followed by successful surgical removal of the aneurysm. Microscopic examination showed that the three layers of the myocardium were present, although it was degenerated by fibrosis. This case belongs to the fibrous type of aneurysm, which is the most rare type, not associated with other developmental defects, usually asymptomatic until there is rupture and sudden death, or the condition is accidentally discovered on chest X-ray and treated surgically.