Fig. 1From: Calcium bilirubinate sludge causes early onset of congenital biliary dilatation: a report of two casesData of Case 1. a Ultrasonography on day 2 showed a large choledochal cyst but no debris. b Ultrasonography on day 45 revealed debris in the cyst. c, d Magnetic resonance imaging and surgical findings confirmed a huge cyst and a narrow segment (arrow). e, f Infrared absorption spectra of the debris. Four major absorption bands (arrows) were characteristic of calcium bilirubinateBack to article page