absence ductus venosus

Schematic drawings (a, c, e), two-dimensional images (b, f) and colour doppler image (d) of abnormal umbilical portal venosus systemic shunt. Note the absence of ductus venosus (DV). Sh (shunt) from posterior right portal vein (PRPV) to IVC in images F. Ao, aorta; H, heart; HV, hepatic vein; L, liver; LPV, left portal vein; MPV, main portal vein; RAPV, right anterior portal vein; RPV, right portal vein; S, stomach; UV, umbilical vein