There is posterior deviation of the outlet septum giving rise to muscular subpulmonary stenosis.
Such complete absence of the muscular outlet septum was not present in any of the patients without the deletion.
Six of the seven patients had complete deficiency of the muscular outlet septum, with the defect extending to the perimembranous area.
The muscular outlet septum, and the "septal" components of the subpulmonary infundibulum, were absent.
Small-to-moderate sized muscular defects in the apical trabecular septum often close by growth and hypertrophy of the muscular septum.
There is continuity of the leaflets of the aortic and pulmonary valves because of absence of the outlet septum.
Both traps in the fourth chambers were baited with hexane-treated septa.
The angiosarcoma, due to its invasive nature, required extensive resection, after which pericardial patches were needed to reconstruct the right atrium and the septum.
