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DOI: 10.1055/s-0029-1231083
© J. A. Barth Verlag in Georg Thieme Verlag KG Stuttgart · New York
Differentiation between Thyroidal and Ectopic Calcitonin Secretion in patients with Coincidental Thyroid Nodules and Pancreatic Tumors – A Report of Two Cases
Publication History
received 09.05.2009
first decision 07.06.2009
accepted 22.06.2009
Publication Date:
18 August 2009 (online)
Abstract
Although elevated blood levels of calcitonin are considered highly indicative for the presence of medullary thyroid carcinomas, they may be observed in patients with chronic kidney disease or in consequence of ectopic calcitonin production. We report two patients who presented with excessively elevated calcitonin levels. Diagnostic work-up revealed a single thyroid nodule and a pancreatic tumor with ectopic calcitonin secretion in both of them. On the basis of these case reports, the diagnostic work flow and management in case of clearly elevated calcitonin levels are described and discussed.
Key words
calcitonin - pancreatic endocrine tumor - secondary hyperparathyroidism - medullary thyroid carcinoma - chronic kidney disease
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Correspondence
R. SchneiderMD
Department of Visceral
Thoracic and Vascular Surgery
Philipps University Marburg
Baldingerstraße
35033 Marburg
Germany
Phone: 0049/6421/586 64 41
Fax: 0049/6421/586 89 95
Email: raschnei@med.uni-marburg.de