title: Thrombopoietin-producing hepatocellular carcinoma.
abstract: A 66-year-old man with hepatocellular carcinoma (HCC) showed marked thrombocytosis (110.7 x 10(4)/microl). Bone marrow (BM) aspirates demonstrated an increase of mature megakaryocytes (MgK). The serum thrombopoietin (TPO) level was increased to about 100-fold that of the normal level in the terminal stage. However, the platelet count gradually decreased to 13.5 x 10(4)/microl. The autopsy specimen revealed normoplastic BM with decreased MgK, mainly consisting of the immature type, and it was negative for tumor cells. Liver specimen showed markedly fatty metamorphosis. Immunohistochemical staining of TPO demonstrated that hepatocytes were weakly stained and HCC cells strongly stained, suggesting TPO-producing HCC.
authors.affiliation: Department of Internal Medicine, Social Insurance Chuo General Hospital, Tokyo.
authors.forename: Tomiko
authors.initials: T
authors.lastname: Ryu
authors.forename: Satoshi
authors.initials: S
authors.lastname: Nishimura
authors.forename: Hideaki
authors.initials: H
authors.lastname: Miura
authors.forename: Haruki
authors.initials: H
authors.lastname: Yamada
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Morita
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Miyazaki
authors.forename: Shigehiro
authors.initials: S
authors.lastname: Kitamura
authors.forename: Yasusada
authors.initials: Y
authors.lastname: Miura
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Saito
mesh_terms: D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000378:metabolism* / Q000473:pathology; D006801:Humans; D008113:Liver Neoplasms / Q000378:metabolism* / Q000473:pathology; D008297:Male; D013921:Thrombocytopenia / Q000276:immunology; D013922:Thrombocytosis / Q000139:chemically induced*; D013926:Thrombopoietin / Q000009:adverse effects / Q000378:metabolism*
chemical_list: D013926:Thrombopoietin