Aortic dissection (AD) in patient with prostetic aortic valve is a rare but potentially fatal complication. Predictors of the occurrence of AD after aortic valve replacement (AVR) include fragility and thinning of the ascending aorta, aortic dilatation, aortic regurgitation (AR) and high blood pressure before AVR operation. AD is usually symptomatic, but rarely asymptomatic.We presented a case of asymptomatic AD seen in routine echocardiographic examination at 15 years after the AVR surgery.