Table 1.
Patients demographics data.
Table 2.
Control group A demographics data.
Table 3.
Control group B demographics data.
Table 4.
Pulse sequence parameters on MR studies.
Fig 1.
Fifty years old man with rectal cancer.
In A (T2-W HASTE coronal plane) and B (T2-W HASTE axial plane), the lesion (arrow) appears as a single periductal hyperintense mass extending to the bifurcations of both right and left hepatic ducts. In C (axial T1-W in phase) and D (axial T1-W out phase) the lesion (arrow) show hypointense signal. During arterial (E), portal (F), equilibrium (G) phase of contrast study the lesion has a progressive contrast enhancement while during hepatobiliary phase (H), is hypointense. DWI sequences: In I b0 s/mm2, in L b50 s/mm2, in M b400 s/mm2, in N b800 s/mm2 and in O ADC map. The tumor shows restricted diffusion.
Fig 2.
Seventy-three years old woman with breast cancer.
A, MIP image. Common hepatic duct is not evident (yellow arrow) and, this is due to a hilar lymph node (yellow arrow) detect in B (axial T2-W HASTE). In b it is also evident the presence (red arrow) of peribiliary tissue as a hyperintense mass extending to the bifurcations of both right and left hepatic ducts. In C (axial T1-W in phase) and D (axial T1-W out phase) the lesion appears as hypointense. After contrast medium (E, arterial, F, portal, G, equilibrium phase) the lesion is not clearly evident so as in arterial phase (H) and portal (I) phase on CT study. DWI sequences: in L b50 s/mm2, in M b800 s/mm2, in N ADC map. The tumor (red arrow) shows restricted diffusion.
Fig 3.
Sixty-three years old man with colorectal cancer.
A, MIP image. Interruption of confluence of the right and left hepatic ducts with biliary tree dilation. In B (axial T2-W HASTE FS) it is evident the presence of peri-intraductal ductal hyperintense tissue at confluence of the right and left hepatic ducts (red arrow) and in peri- left hepatic ducts (yellow arrow), that appear hypointense (red and yellow arrow) in C (axial T1-W in phase) and D (axial T1-W out phase), with progressive contrast enhancement in E (arterial phase) and D (portal phase). On CT study in F (arterial phase there is no evidence of lesion, while in portal phase (G) the tumor (yellow arrow) appears as a hypodense hepatic lesion.
Fig 4.
Seventy years old woman with pancreatic cancer (yellow arrow).
In A (axial T2-W HASTE) the lesion shows (red arrow) hyperintense signal; in B (axial T1-W in phase) and C (axial T1-W out phase) it appears hypointense (red arrow). During contrast study (D, arterial phase, E, portal phase, F, hepatospecific phase) on MR, there is no evidence of the lesion so as on arterial (G) and portal (H) phase on CT study. DWI sequences: In I b50 s/mm2, in L b800 s/mm2, in M ADC map. The tumor (red arrow) shows restricted diffusion.