Progression of Ascending Aorta Diameters in Bicuspid Aortic Valve After Transcatheter or Surgical Replacement.

Inclusion Criteria: * Age ≥ 18 years * Bicuspid aortic valve stenosis treated with surgical or transcatheter aortic valve replacement; * Concomitant ascending aorta aneurysm, with no indication to surgical treatment at the time of intervention; * Patients with indication to follow-up Chest CT angiography Scan. * Signed informed consent, inclusive of release of medical information. Exclusion Criteria: * Aortic valve replacement in tricuspid valves or bicuspid insufficient valves or endocarditis; * Aortic valve replacement associated with surgery of ascending aorta/aortic root; * Aortic valve replacement associated with other cardiac valve surgery; * Previous cardiac surgery of any kind; * Patient unable to give informed consent or potentially noncompliant with the study protocol, in the judgment of the investigator; * Participation in another clinical trial that could interfere with the endpoints of this study; * Pregnant or breastfeeding at time of screening.