Dilated cardiomyopathy with regional myocardial hypoperfusion in Becker's muscular dystrophy.

We describe two cases of Becker's muscular dystrophy, both of which presented with a dilated cardiomyopathy with alterations of myocardial perfusion and hypokinesia in the anteroseptal and apical ventricular walls. To the best of our knowledge, only one case with similar cardiologic characteristics has been reported previously. Myocardial involvement in this disease is comparable to that found in the Duchenne form of dystrophy. The possible mechanisms underscoring its induction are discussed.