Synchronous Double Primary Combined Hepatocellularcholangiocarcinoma and Cholangiolocarcinoma in a Cirrhotic Liver  

作　　者：Masahiro Sakata Koji Kitada Rika Omote Hiroshi Sonobe Masashi Utsumi Naoyuki Tokunaga Takashi Fushimi Ryota Nagao Tatsuro Sakata Toshihiko Kaneyoshi Tatsuya Toyokawa Masaru Inagaki 

机构地区：[1]Department of Gastroenterology and Hepatology,National Hospital Organization,Fukuyama Medical Center,Fukuyama,Hiroshima,Japan [2]Department of Surgery,National Hospital Organization,Fukuyama Medical Center,Fukuyama,Hiroshima,Japan [3]Department of Laboratory and Pathology,National Hospital Organization,Fukuyama Medical Center,Fukuyama,Hiroshima,Japan [4]Department of Radiology,National Hospital Organization,Fukuyama Medical Center,Fukuyama,Hiroshima,Japan

出　　处：《Journal of Clinical and Translational Hepatology》2023年第4期991-997,共7页临床与转化肝病杂志（英文版）

摘　　要：Both combined hepatocellular-cholangiocarcinoma(cHCCCCA)and cholangiolocarcinoma are rare primary liver cancers.cHCC-CCA is believed to originate from transformed hepatocellular carcinoma or liver stem/progenitor cells.Cholangiolocarcinoma is characterized by ductular reaction-like anastomosing cords and glands resembling cholangioles or canals containing hepatocellular carcinoma components and adenocarcinoma cells.According to the 2019 revision of the World Health Organization criteria,a subtype with stem cell features as a subclassification of cHCC-CCA was abolished for lack of conclusive evidence of the stem cell origin theory.That led to the classification of cholangiolocarcinoma with hepatocytic differentiation as cHCC-CCA.Consequently,cholangiolocarcinoma without hepatocytic differentiation is classified as a subtype of small-duct cholangiocarcinoma and is assumed to originate from the bile duct.Herein,we report the first case of double primary cHCC-CCA and cholangiolocarcinoma without hepatocytic differentiation in different hepatic segments of a cirrhotic liver.We believe this case supports the validity of the new World Health Organization criteria because the pathological finding of cHCC-CCA in this case shows the transformation of hepatocellular carcinoma to cholangiocarcinoma.Furthermore,this case may demonstrate that immature ductular cell stemness and mature hepatocyte cell stemness in hepatocarcinogenesis can coexist in the same environment.The results provide valuable insights into the mechanisms of growth,differentiation,and regulation of liver cancers.

关 键 词：Bile duct neoplasms Combined hepatocellular-cholangiocarcinoma Cholangiolocarcinoma CIRRHOSIS Liver neoplasms 

分 类 号：R735.8[医药卫生—肿瘤] R735.7[医药卫生—临床医学]