抄録
Two cases of the common atrium associated with persistent left superior vena cava directly connecting into the left side of the atrium are reported. In both patients, the mitral cleft was repaired and the atrial septum was newly constructed with a large teflon-patch. The left superior vena cava was ligated in Case 1, and in Case 2 a tunnel to transfer the emptying orifice of the left superior vena cava to the right side of the atrium was made from a pericardial pedicle. The former was reoperated upon due to the severe residual mitral insufficiency but died after mitral valve replacement. The latter was discharged with a good condition.
