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  • Title: Clinicopathologic features of patients with intrahepatic cholangiocarcinoma who are seropositive for alpha-fetoprotein-L3 and those with combined hepatocellular and cholangiocarcinoma.
    Author: Okuda H, Shiratori K, Yamamoto M, Takasaki K, Nakano M.
    Journal: J Gastroenterol Hepatol; 2006 May; 21(5):869-73. PubMed ID: 16704538.
    Abstract:
    BACKGROUND: Some patients who are seropositive for lectin-reactive alpha-fetoprotein (AFP-L3) have intrahepatic cholangiocarcinoma (ICC). There have been no studies regarding the features of ICC patients seropositive for AFP-L3. Thus, the purpose of the present paper was to compare the features of ICC patients from the viewpoint of two different tumor markers, AFP-L3 and carbohydrate antigen (CA) 19-9. METHODS: The ICC patients who underwent hepatectomy (n = 51) were divided into three groups, and their clinicopathologic features were compared: (i) group A, seropositive for AFP-L3 >or= 15%; (ii) group B, seropositive for CA 19-9 >or= 37 U/mL; and (iii) group C, seronegative for both AFP-L3 and CA 19-9. The features of combined hepatocellular and cholangiocarcinoma (n = 11) were also studied. RESULTS: Group A had a higher positivity rate for hepatitis viruses than group B (60%vs 20%, P < 0.05). More patients in group A were misdiagnosed as having hepatocellular carcinoma (HCC) at surgery (70%vs 5.7%, P < 0.001) who also had chronic liver disease (80%vs 25.7%, P < 0.01) than in group B. Seven, 10 and 11 of the 11 patients with combined hepatocellular and cholangiocarcinoma were seropositive for AFP-L3, CA 19-9 and hepatitis viruses, respectively. Ten were diagnosed as having HCC at surgery and nine had chronic liver disease. CONCLUSIONS: Patients with ICC seropositive for AFP-L3 and those with combined hepatocellular and cholangiocarcinoma have features close to HCC. The present study has, for the first time, identified a subgroup of ICC patients, seropositive for AFP-L3, having features close to HCC that are very different from those of the classical ICC patients seropositive for CA 19-9.
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