Congenital diverticulum of the left ventricle. Report of two unusual cases.

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Abstract
Of 2 [human] infants with congenital cardiac diverticula 1 had a defect consisting of a submitral valvular diverticulum rather than the expected aneurysm. It was clearly shown by echocardiography as well as angiography and was associated with moderate mitral incompetence and a poorly functioning left ventricular wall. The 2nd infant had an isolated apical left ventricular diverticulum with subnormal left ventricular function and severe mitral incompetence. Because of intractable congestive heart failure this infant underwent successful replacement of a dysplastic fibrotic mitral valve which on histological examination had myxomatous features. The association between congenital mitral disease and congenital apical diverticula may be related to race and sex.