窪田 一之¹, 厚地 良彦¹, 皆越 真一², 有馬 新一², 中園 佳成², 中尾 正一郎², 田中 弘允²

Kazuyuki KUBOTA¹, Yoshihiko ATSUCHI¹, Shinichi MINAGOE², Shinichi ARIMA², Yoshiaki NAKAZONO², Shoichiro NAKAO², Hiromitsu TANAKA²

¹天陽会中央病院循環器内科, ²鹿児島大学医学部第一内科

¹Department of Cardiorogy, Tenyo-kai Chuo Hospital, ²The First Department of Internal Medicine, Faculty of Medicine, Kagoshima University

キーワード : Coronary Artery Fistula, Color Doppler Echocardiography

A 60-year-old man with coronary artery fistula communicating with the left ventricle was reported. The initial clinical impression was aortic valve regurgitation, because of diastolic blowing murmur. But a dilated right coronary artery was visualized through two-dimensional echocardiography, and an abnormal mosaic pattern in the left ventricle during diastole was visualized in Doppler color flow imaging. These findings were strongly suggestive of a right coronary artery fistula draining to the left ventricle. The diagnosis was confirmed by coronary arteriography. Doppler color flow imaging is very useful in diagnosing of coronary artery fistula.