(A to C) Pre-transcatheter aortic valve replacement computed tomography scan shows a linear band across the dilated ascending aorta (arrows) in 3 different views. (D) Transesophageal echocardiographic long-axis view showing linear membranes (arrow) extending from the aortic valve commissures to the sinotubular junction (Videos 1 and 2). An aortogram (not shown) revealed a dilated ascending aorta with no evidence of ascending aortic dissection (Video 3). (E) Orthogonal echocardiographic views showing membrane (arrows) originating from the commissure between the noncoronary and left coronary cusp and inserting into the sinotubular junction. (F) Long-axis 3-dimensional view of the left ventricular outflow tract showing the aortic valve membrane (arrow). (G) Fluoroscopy showing deployment of a 29-mm Sapien 3 (Edwards Lifesciences, Irvine, California) valve. (H) Post–transcatheter aortic valve replacement assessment revealed that the membrane shifted along the side with the leaflets (arrow). (I) Post–transcatheter aortic valve replacement color flow assessment revealed normal Sapien 3 valve function with no turbulence in the ascending aorta (Videos 4 and 5).