Fig. 9

Typical biloma (*) observed 2 weeks after laparoscopic cholecystectomy as water-attenuation collection abutting the gallbladder fossa at CT (a). Some days later, MRI showed unchanged shape and size of the biloma, with homogeneous fluid and unrestricted diffusion on T2-weighted (b), apparent diffusion coefficient map (c) and MRCP (d). A small fluid track (thin arrows) was seen connecting the biloma to the hepatic parenchyma. Coronal (e) gadoxetic acid-enhanced MRCP image showed well-opacified bile in the common bile duct (arrowhead) and short cystic duct remnant (arrow), and no filling of the biloma, which was attributed to a sealed leak from small peripheral bile radicle