Transverse (above left) and sagittal (below left) US of the liver shows an oval shaped cystic mass in the porta hepatis that is separate from the normal gallbladder. Anterior image of a HIDA scan obtained 40 minutes after radiotracer injection (above right) shows radiotracer localization in the liver, in a large oval mass medial to the liver, in the gallbladder which overlies the inferior and lateral border of the liver, and in the bowel. AP image from an intraoperative cholangiogram (below right) shows contrast being injected into the gallbladder which is flowing down the cystic duct and then filling an oval mass superior to the gallbladder. The contrast filled mass contains an air bubble and is partially obscured by a surgical retractor overlying it.
Pediatric Imaging 