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    A patient with a metastatic gastroenteropancreatic endocrine carcinoma causing hyperinsulinaemic hypoglycaemia and the carcinoid syndrome.

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    Authors
    Hinchliffe, E
    Allcock, R L
    Mansoor, Was
    Myers, M A
    Affiliation
    Department of Clinical Biochemistry, University Hospital of South Manchester, Wythenshawe, Manchester M23 9LT, UK.
    Issue Date
    2011-11
    
    Metadata
    Show full item record
    Abstract
    We present the case of a 57-year-old patient who initially presented with a constellation of symptoms including intense pruritis, flushing and diarrhoea. Following several months clinical deterioration, the patient was investigated radiologically, where multiple hepatic tumours were identified. Liver biopsy confirmed the presence of a well-differentiated metastatic gastroenteropancreatic endocrine carcinoma with biochemical evidence of serotonin secretion. Over a period of six months, the clinical course of the patient's disease progressed whereby severe hypoglycaemia became the major manifestation. Subsequent biochemical investigations confirmed the diagnosis of an insulinoma. Extensive radiological investigation revealed a solitary primary pancreatic tumour, indicating the presence of a metastatic pancreatic endocrine tumour (PET) secreting both insulin and serotonin. The patient was treated with a chemotherapy regimen consisting of 12 cycles of 5-fluorouracil/oxaliplatin, responding clinically - improved World Health Organization performance score from 3 to 1, biochemically - significantly reduced plasma chromogranin A and cancer antigen 19-9 concentrations and improved liver function tests, and radiologically - reduced pancreatic and hepatic tumour size. This is the first report of a primary PET secreting insulin and serotonin. Due to the association of serotonin-secreting gastroenteropancreatic endocrine tumours (GEP-ETs) with multiple endocrine neoplasia type-1 (MEN1) and biochemical evidence of an insulinoma, MEN1 should also be considered in such cases. The case provides further evidence for the biological heterogeneity of GEP-ETs and the myriad secretory humoral products and resultant clinical syndromes arising from such tumours.
    Citation
    A patient with a metastatic gastroenteropancreatic endocrine carcinoma causing hyperinsulinaemic hypoglycaemia and the carcinoid syndrome. 2011, 48 (Pt 6):579-83 Ann Clin Biochem
    Journal
    Annals of Clinical Biochemistry
    URI
    http://hdl.handle.net/10541/216435
    DOI
    10.1258/acb.2011.011068
    PubMed ID
    21948491
    Type
    Article
    Language
    en
    ISSN
    1758-1001
    ae974a485f413a2113503eed53cd6c53
    10.1258/acb.2011.011068
    Scopus Count
    Collections
    All Christie Publications
    Medical Oncology

    entitlement

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