Fetal cholelithiasis ultrasound

Ultrasound
They may be seen as cluster of minute echogenic juxta-hepatic foci at the expected position of the gallbladder. Shadowing as well as comet tail artifacts may also be seen.

In the context of gallbladder sludge, the gallbladder may be diffusely echogenic. It may be sometimes difficult, if not impossible, to distinguish true sludge from multiple small stones 11.

Prognosis
In most cases, they are not thought to be of much concern with most resolving within the 1st year of life.