Findings:
Small gallbladder measuring 23 x 2 mm with finely echogenic walls (accessible for puncture).
Echogenic cord in front of the right portal branch 3 mm thick, not fulfilling the 4 mm cutoff for the triangular cord sign but still suspicious.
Dilation of the hepatic artery at the hilum (3.3 mm), nearly as large as the portal vein. Permeable portal and hepatic veins.
Slightly heterogeneous echogenicity of the liver parenchyma, with smooth contours.
No visibility of the extrahepatic bile ducts.
Mild splenomegaly at 6.2 cm (no polysplenia).
Partially visible portions of the pancreas are normal. Normal relationship of mesenteric vessels.
Normal kidneys. No mass effect in the adrenal regions.
Bladder, uterus and right ovary normal. Left ovary not seen in the pelvic cavity.
Conclusion:
High suspicion for biliary atresia.