Dm. Skinker et al., RIGHT-VENTRICULAR BIOPSY FINDINGS OF HYPERTROPHIC CARDIOMYOPATHY IN APATIENT WITH NOONAN-SYNDROME, Cardiology in the young, 8(2), 1998, pp. 256-259
We report right ventricular ultrastructure in a 20-year-old patient wi
th Noonan's Syndrome. Initial left ventricular and septal myocardial h
ypertrophy, observed at 2 months without obstruction, progressed to bi
ventricular involvement over 18 years. Histopathologic evidence of car
diomyocytic disarray, with ultrastructural evidence of myofibrillar di
sarray, confirmed typical biopsy findings of hypertrophic cardiomyopat
hy on the right ventricular side of the septum.