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Double inlet–outlet right ventricle. (A) View from the atria: both the atria drain mostly into a main ventricular chamber of right morphology through two separate atrioventricular valves. The left atrioventricular valve straddles and overrides the interventricular septum (star): note the posterior small ventricular chamber of left morphology. (B) View of the large right ventricle with coarse trabeculations in which both the atrioventricular valves drain.
