Ascending aortic aneurysm associated with a quadricuspid aortic valve.

We report here a rare case of ascending aortic aneurysm associated with a tricuspitalized quadricuspid aortic valve. A 45-year-old man had a fusiform ascending aortic aneurysm with aortic valve regurgitation. Transthoracic echocardiography revealed grade III aortic regurgitation. Chest computed tomography showed an ascending aortic aneurysm with a diameter of 48 mm. Surgery revealed that the aortic valve was a tricuspitalized quadricuspid aortic valve with an accessory cusp between the right coronary cusp and left coronary cusp.