fig1

Figure 1. Morphology of pCCA with magnetic resonance cholangiopancreatography (MRCP). (A) On T2-weighted axial image, a nodular mass is noted within the bile duct bifurcation. (B) On T1-weighted axial image, the same lesion is seen as an enhancing nodular mass. (C) MRCP with 3D reconstruction shows the lesion involving the confluence of the bile duct.