Surgical Treatment for Occlusion of Left Coronary Artery Ostium by an Aortic Valve Cusp

Abstract

The patient was a 4-year-old boy, with no indication of heart disease at birth. When he was 4 years and 3 months old, he underwent surgery for cryptorchidism, and persistent changes after crying, consisting of ST-segment depression, were noted on the ECG. Therefore, it was decided that a detailed examination would be carried out. Aortography revealed that a small left coronary cusp had formed a pouch and that there was a delayed washout of the contrast material in the left coronary artery compared with the right coronary artery. Right coronary angiography showed retrograde flow to the left coronary artery. There was no significant aortic regurgitation, and no stenosis in the left coronary artery. Intraoperative findings demonstrated that the hypoplastic left coronary cusp had adhered to the aortic wall and covered the left sinus of Valsalva. Enlargement of the Valsalva was performed by placing a patch from the aortic transection site to an area directly above the coronary artery ostium. Postoperatively, the patient recovered satisfactorily and was discharged on the eleventh postoperative day. Cardiac catheterization performed 6 months after surgery showed no aortic regurgitation, no significant stenosis in the left coronary artery, and no retrograde flow from the right coronary artery. We report our experience with the rare case described above.