Following images and videos show a case of aorto-left ventricular tunnel that was seen in a 22-week old fetus.

Images 1, 2, and videos 1, 2: 22 weeks of pregnancy; the images and videos show stenotic part of the aorta at the level of dysplastic semilunar valves and enlargement of the proximal ascending aorta (la - left atrium, LV - left ventricle, PROX ao - proximal ascending aorta). Aorto-left ventricular tunnel - arrow. Video 2 shows color Doppler flow within the tunnel.

Drawings 1, 2: The drawings show principle of the aorto-ventricular tunnel - the tunnel represents a paravalvar communication between the aorta and the left ventricle (LV) and connects the ascending aorta above the sinotubular junction to the left (most of the cases) or right ventricle.

RA - right atrium; RV - right ventricle; LA - left atrium; LV - left ventricle; Ao - aorta; PA - pulmonary artery; green arrow passes via the aorto-ventricular tunnel connecting the aorta and left ventricle.