title: [Risk factors of intrahepatic cholangiocarcinoma: a case-control study].
abstract: OBJECTIVE
  To explore the potential risk factors of intrahepatic cholangiocarcinoma (ICC) in China.
  
  
  METHODS
  A case-control study including 317 patients with pathologically confirmed ICC and 634 healthy individuals was conducted. The cases and controls were matched in age, sex and inhabitancy. Data were statistically analyzed by Chi-square test and conditional logistic regression.
  
  
  RESULTS
  Univariate analysis showed significant difference in HBsAg seropositivity, liver cirrhosis, hepatolithiasis, choledocholithiasis and schistosomiasis between ICC patients and healthy controls (P < 0.05). Multivariate analysis confirmed that HBsAg seropositivity, liver cirrhosis, hepatolithiasis and hepatic schistosomiasis were associated with ICC, and their adjusted odds ratio (95% confidence interval) were 10.265 (6.676-15.783), 13.101 (5.265-32.604), 18.242 (3.580-92.958), 18.435 (1.930-176.082), 15.102 (4.607-49.499) and 11.820 (3.522-39.668), respectively. The incidence of hepatic cyst, cholecystolithiasis, hepatic hemangioma, fatty liver, diabetes mellitus, smoking and drinking were not significantly different between ICC patients and controls.
  
  
  CONCLUSIONS
  The HBV infection, liver cirrhosis, hepatolithiasis and hepatic schistosomiasis may be the risk factors for ICC in China.
authors.affiliation: Department of Comprehensive Treatment II, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China.
authors.forename: Hua-bang
authors.initials: HB
authors.lastname: Zhou
authors.forename: Qin-rong
authors.initials: QR
authors.lastname: Xu
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.forename: Dong-xun
authors.initials: DX
authors.lastname: Zhou
authors.forename: Hao
authors.initials: H
authors.lastname: Wang
authors.forename: Qing
authors.initials: Q
authors.lastname: Wang
authors.forename: Shan-shan
authors.initials: SS
authors.lastname: Zhou
authors.forename: Qian-qian
authors.initials: QQ
authors.lastname: Tu
authors.forename: Zheng-qin
authors.initials: ZQ
authors.lastname: Sun
authors.forename: Li
authors.initials: L
authors.lastname: Ai
authors.forename: Meng-chao
authors.initials: MC
authors.lastname: Wu
authors.forename: He-ping
authors.initials: HP
authors.lastname: Hu
mesh_terms: D000328:Adult; D000368:Aged; D001650:Bile Duct Neoplasms / Q000453:epidemiology / Q000209:etiology*; D001653:Bile Ducts, Intrahepatic; D016022:Case-Control Studies; D018281:Cholangiocarcinoma / Q000453:epidemiology / Q000209:etiology*; D002769:Cholelithiasis / Q000150:complications* / Q000453:epidemiology; D005260:Female; D006509:Hepatitis B / Q000150:complications* / Q000453:epidemiology; D006514:Hepatitis B Surface Antigens / Q000097:blood; D006513:Hepatitis B e Antigens / Q000097:blood; D006801:Humans; D008103:Liver Cirrhosis / Q000150:complications / Q000453:epidemiology; D008107:Liver Diseases / Q000150:complications / Q000453:epidemiology; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D012307:Risk Factors
chemical_list: D006514:Hepatitis B Surface Antigens; D006513:Hepatitis B e Antigens