1Department of Cardiology, Niigata Kobari Hospital, 2Department of Physiological Examination, Niigata Kobari Hospital, 3Department of Cardiovascular Surgery, Niigata Kobari Hospital
A 61-year-old woman with a tumor in the right atrium was first seen at the department of cardiovascular surgery of this
institution on August 24, 1995. Transesophageal echocardiography (TEE) showed masses in the inferior vena cava and right
atrium. One of these masses entered the right ventricle during diastole. Magnetic resonance imaging and venography suggested
extension of a tumor originating near the left ovarian vein through the inferior vena cava and into the right atrium. The tumor
was resected under cardiopulmonary bypass on September 13, 1995, and the pathologic diagnosis was intravenous leiomyomatosis (IVL). IVL is a rare benign tumor that extends intravenously in the uterus and pelvic veins: fewer than 30 cases have been
reported. TEE contributes to preoperative assessment of the structure and the extension of the tumor into the great vessels,
inflow and outflow tracts, values, and intra-atrial septum.