A large left atrial myxoma with a feeding vessel from the right coronary artery / 대한내과학회지

ABSTRACT

A 55-year-old woman was referred to our hospital with a 6-month history of dyspnea (NYHA II-III). The physical examination revealed a grade 2/6 "tumor plop," i.e., a low-pitched sound heard during early or mid-diastole. The chest X-ray showed mild cardiomegaly with lung congestion in both lower lung fields. Two-dimensional echocardiogram showed a large myocardial mass, prolapsing into the left ventricle during diastole. Chest computed tomography showed a multi-lobulated mass (6.8x4.1 cm) attached to the interatrial septum during systole and prolapsing into the left ventricle during diastole. Coronary angiography demonstrated large tumor vessels arising from and surrounding the posterior lateral branch of the right coronary artery. The mass was excised and the patient recovered uneventfully.