Fig. 5. Prenatal observation of the right hepatic artery (RHA) in fetuses with hepatic hilar cyst.

A, B. RHA was clearly visible in a fetus with cystic biliary atresia at 32 weeks by two-dimensional ultrasonography and color Doppler ultrasonography. C, D. RHA was invisible either by two-dimensional ultrasonography or color Doppler ultrasonography in a fetus with choledochal cyst (32 weeks), and even the common hepatic artery (CHA) was not clear enough by two-dimensional ultrasound. AO, aortaventralis; LHA, left hepatic artery; RHA, right hepatic artery; SA, splenic artery; SP, spine.