[Mitral Valvuloplasty in a Patient with Left Inferior Vena Cava with Hemiazygos Continuation:Report of a Case].

Congenital anomalies of the inferior vena cava have been reported more frequently with the development of computed tomography (CT). Here, we report a case of a 70-year-old woman who was diagnosed with heterotaxy syndrome and was suitable for mitral valvuloplasty. The diagnosis was made based on the preoperative contrast-enhanced CT findings of the left inferior vena cava with hemiazygos continuation into the coronary sinus and absence of the hepatic segment of the right inferior vena cava. The patient successfully underwent mitral valvuloplasty under cardiac arrest and cardiopulmonary bypass with drainage from the right superior vena cava and left femoral vein. The patient had an uneventful postoperative course and was discharged on postoperative day 13. In conclusion, the accurate preoperative diagnosis of cardiac and vascular anatomy is essential for developing effective surgical strategies in cardiac procedures, especially when a cardiopulmonary bypass is required.