Adjuvant surgery for advanced extrahepatic cholangiocarcinoma

Figure 1 Abdominal computed tomography angiography image of the common bile duct. Thickening of the wall of the distal common bile duct, which enhances with contrast, was observed (arrowhead).

Figure 2 Abdominal computed tomography and computed tomography angiography images at two different levels are shown. A: Computed tomography (CT) showed a low-density mass measuring 8 mm in diameter located in segment 7 of the liver (arrowhead); B: CT showed a low-density mass measuring 8 mm in diameter in segment 6 (arrowhead); C: Computed tomography angiography (CTA) demonstrated an enhancing mass lesion at the same location as in Figure 2A (arrowhead); D: CTA demonstrated an enhancing mass lesion at the same location as in Figure 2B (arrowhead).

Figure 3 Histopathologic appearance of the cholangiocarcinoma (hematoxylin and eosin, × 200). Tumor cells were detected in the distal bile duct on microscopic examination.