Key points are not available for this paper at this time.
A case of partial absence of the right ventricular musculature was reported. The patient, 84-year-old female, had no cardiac symptoms or signs. The muscular defect of the right ventricle was first found at autopsy. It was 15×12mm. in size, located at the pulmonary conus and was histologically composed of endocardial and pericardial layers.
Sugiura et al. (1970) studied this question.