Fig. 1. Dynamic liver computed tomography scans performed before the second transarterial chemoembolization. (A, B) Arterial phase images show an irregular-shaped hypervascular mass with partially retained Lipiodol (Guerbet, France) in the right posterior section of the liver (short arrowheads). Intrahepatic ducts (IHDs; arrows) pass through the tumor and are dilated. There is a 1.7 cm-sized oval-shaped intraductal ingrowth of the tumor in the right IHD (long arrowheads). (C, D) Delayed phase images show contrast washout of the tumor (short arrowheads), including the intraductal portion (long arrowheads). Dilated right IHDs are indicated with arrows. (E) A coronal reconstruction image well depicts the intraductal portion of the tumor (long arrowheads) along with the dilatation of the right IHD (arrow). (F) There is no evidence of radiopaque stones in the gallbladder and common bile duct.
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