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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 387 (1980), S. 107-116 
    ISSN: 1432-2307
    Keywords: α-fetoprotein (AFP) ; Carcinoembryonic antigen (CEA) ; Carcinoid (tumor) ; Gastric cancer ; Metastatic liver tumor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The patient was a 60-year-old Japanese male. He complained of epigastralgia and right chest pain of 4 month's duration, and general malaise, nausea and vomiting of 2 month's duration. Physical examination revealed on the right third rib a tender mass with a diameter of 2 cm and hepatomegaly with a multi-nodular surface and red palms. There were no signs of carcinoid syndrome, such as cutaneous flushing. Laboratory examinations disclosed certain biochemical alterations; alkaline phosphatase 810 IU/l, γ-glutamyl transpeptidase (γ-GTP) 2090 IU/l, carcinoembryonic antigen (CEA) 23.5 ng/ml and α-fetoprotein (AFP) 6,800 ng/ml. Both HBs-Ag and HBs-Ab were negative. The patient died in a uremic state, with rapid increases of jaundice and ascites. Autopsy revealed gastric carcinoid with extensive metastases to the liver and the bone marrow. Tumor cells showed argyrophilia but not argentaffinity. Immunofluorescence specific for AFP was positive in the hepatocytes, particularly those adjacent to the metastatic tumor cells but not in the tumor cells, either primary or secondary. 79 Cases reported in Japan of serum AFP-positive malignant tumor other than hepatocullular carcinoma and certain other malignancies of germ cell origin are reviewed and discussed.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2307
    Keywords: Choriocarcinoma ; Gastric neoplasm ; Human chorionic gonadotropin (hCG) ; Pregnancy specific β-1 glycoprotein (SP-1) ; Immunocyto-chemistry ; Immunoperoxidase stain
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Gastric choriocarcinoma is a rare tumor and attracts interest because of its controversial pathogenesis. The present study reports a choriocarcinomatous change with immunocytochemically hCG-positive cells in the gastric carcinoma. The patients were males, one was 41 years old and the other 42 years old. The tumor of both cases consists of adenocarcinoma and choriocarcinoma. A sequential process of morphological transition of the adenocarcinoma to the choriocarcinoma can be traced. Indirect immunoperoxidase stain (PAP method) for human chorionic gonadotropin (hCG) demonstrates the localization of hCG in the syncytiotrophoblasts. Small number of cytotrophoblasts are weakly positive. None of the components of adenocarcinoma of both cases is positive for hCG. Human placental lactogen is not demonstrated in both cases. Stain for pregnancy specific β-1 glycoprotein is weakly positive in the adenocarcinoma of one case but not in the choriocarcinoma. In one case, the concentration of hCG was 19.9mIU/ml in the preoperative serum and decreased to 1.2mIU/ml after gastrectomy. HCG production by gastric carcinoma was discussed with regard to possible pathogenesis of gastric choriocarcinoma.
    Type of Medium: Electronic Resource
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