Abstract
Macroscopic intrabiliary tumor growth has been reported as a mode of intrahepatic spread in patients with colorectal liver metastasis. Histologically, intrabiliry tumor growth have two components: intaraluminal and intraepithelial extension. We report a rare case of liver metastasis from sigmoid colon cancer with intrabiliary growth of mucinous cancer which had both intraepiehelial and intraluminal components. A female patient aged 45 years who in 2006 had been diagnosed as having sigmoid colon mucinous cancer and had received sigmoidectomy was admitted in our hospital in 2011. She was diagnosed with liver metastasis in posterior segment with intrabiliary tumor growth on CT. She underwent hepatectomy of posterior segment. In the resected specimen, there was whitish solid tumor of 21 mm in diameter. Bile duct close to the tumor was filled with mucin. Pathological findings indicated a liver metastasis from sigmoid colon cancer with intrabiliary growth of mucinous cancer which had both intraepiehelial and intraluminal components.
