Fig. 3

Imaging and pathologic features of a PA/IVS fetus (23^+ 3 weeks). (A) Four-chamber view showing hypoplastic right ventricle, dilated left atrium and left ventricle, and thickened right ventricular wall; (B) Absence of significant tricuspid regurgitation; (C) Small pulmonary valve annulus with tortuous ductus arteriosus (DA); (D) Retrograde DA flow into PA; (E-G). Color and spectral Doppler demonstrating VCAC. (H). Anterior specimen view revealing multiple RV surface VCACs