肝外発育を呈したmulticystic biliary hamartomaの1例

A case of multicystic biliary hamartoma

multicystic biliary hamartomaはZenらが2006年に提唱したまれな肝過誤腫性病変である^1）。今回我々は，肝外性に発育したmulticystic biliary hamartomaの1例を経験したので，文献的考察を加えて報告する。

We report a case of multicystic biliary hamartoma of the liver in a 80-year-old female. CT showed a 46×30 mm multicystic tumor in the right lobe of the liver, which contained many walls exhibiting various thickness. In gadoxetic acid-enhanced MR imaging, an uptake of gadoxetic acid was showed in thick walls. Gallbladder bed resection was performed. Histological diagnosis of multicystic biliary hamartoma was obtained. The lesion was composed of ductal structures, periductal glands, fibrous connective tissues and hepatic parenchyma. Hepatic parenchyma existed in thick walls.