A Rare Cause of Supravalvular Aortic Stenosis: Aberrant Fibrous Band Formation Connecting the Left Coronary Cusp to the Sinus Wall

Transesophageal echocardiography (TEE) revealed that supravalvular aortic stenosis was caused by an aberrant fibrous band bridging the left coronary cusp and the sinus wall. This case highlights the advantage of TEE in delineating such abnormal anatomy and guiding precise etiological diagnosis and surgical planning.