Figure 4From: Aortic obstruction: anatomy and echocardiographyTubular hypoplasia of the ascending aorta. Anatomic specimen (A) and four-chamber transesophageal image (B) demonstrate narrowing of the ascending aorta (white arrows in A). The black arrow in (A) points to a biological prosthesis in mitral position. AoV-Aortic valve, PA-Pulmonary artery. Other abbreviations as before.Back to article page