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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 56 (1978), S. 697-701 
    ISSN: 1432-1440
    Keywords: Calcitonin ; Phäochromocytom ; Sipple-Syndrom ; Tumor „Marker“ ; Paraneoplastische Hormonsekretion ; Calcitonin ; Pheochromocytoma ; Sipple-syndrome ; Tumor marker ; Paraneoplastic hormone secretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary As pheochromocytoma sometimes is accompanied by medullary thyroid carcinoma (in the sense of multiple endocrine adonomatosis type II=Sipple-Syndrome), serum calcitonin (CT) was measured by radioimmunoassay in 4 patients with pheochromocytoma. Before extirpation of the adreno-medullary tumor, serum CT was distinctly increased to 3 and 30 ng/ml in 2 of 4 patients, respectively. After removal of the tumor, serum CT was normal in the patients and pentagastrin stimulation produced no exaggerated CT response. In hydrochloric acid extracts from the two corresponding pheochromocytoma tissues, immunoreactive-Calcitonin (IR-CT) was detected, the concentrations amounting 1 and 4 ng/mg wet tissue. These findings suggest that hypercalcitonism in patients with pheochromocytoma cannot always be ascribed to the thyroid, i.e. increased calcitonin levels do not necessarily indicate a medullary carcinoma of this organ.
    Notes: Zusammenfassung Da Phäochromocytome in Kombination mit einem medullären Schilddrüsen-Carzinom auftreten können (multiple endokrine Adenomatose Typ II=Sipple-Syndrom), wurden bei 4 Patienten mit Phäochromocytomen die Serumcalcitoninspiegel radioimmunologisch bestimmt. Bei 2 der 4 Patienten fanden sich vor Operation des Nebennierenmarktumors deutlich erhöhte Calcitoninspiegel von 3 und 30 ng/ml. Nach Entfernung des Tumors normalisierten sich die Calcitoninspiegel, ebenso erzeugte die Pentagastrin-Stimulation keinen pathologischen Anstieg des Calcitonins. In salzsauren Extrakten aus den entsprechenden beiden Phäochromocytomen fand sich radioimmunologisch bestimmbares Calcitonin; die Werte betrugen 1und 4 ng/mg Frischgewicht. Der Nachweis einer Hypercalcitoninämie bei Patienten mit Phäochromocytomen läßt daher nicht unbedingt den Schluß auf ein gleichzeitig bestehendes medulläres Schilddrüsen-Carcinom zu, da offensichtlich Nebennierenmarktumoren zu Calcitoninproduktion und -sekretion fähig sind.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 143 (1984), S. 112-116 
    ISSN: 1432-1076
    Keywords: C-cell-carcinoma ; Pheochromocytoma ; Neuroma ; Calcitonin ; Carcinoembryonic antigen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Three patients with a sporadic form of multiple endocrine neoplasia (MEN) IIb are presented. MEN IIb is the association of medullary carcinoma of the thyroid (MTC), pheochromocytoma and multiple mucosal neuromata. The age at diagnosis and primary therapy of MTC was relatively late (8, 16, 18 years) although thyroid enlargement (two cases), typical marfanoid habitus (two cases) or multiple mucosal neuromata (one case) had been evident since early childhood. The diagnosis was confirmed by measurements of tumour markers like calcitonin (CT) and carcinoembryonic antigen (CEA) for MTC, measurements of vanillylmandelic acid for pheochromocytoma, evaluation of the thyroid gland by sonography, scintigraphy and fine needle biopsy, and investigation of the adrenals by computer tomography and meta-(I-131) iodobenzylguanidine (I-131-MIBG) scintigraphy. After surgical treatment determinations of tumour markers confirmed relapses of MTC in all cases. Early diagnosis of MEN IIb, which could be made by recognition of the typical clinical appearance, is of special importance because of the poor prognosis of MTC.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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