Title
Diagnostic pitfalls in digestive neuroendocrine tumours Diagnostic pitfalls in digestive neuroendocrine tumours
Author
Faculty/Department
Faculty of Medicine and Health Sciences
Publication type
article
Publication
Bruxelles ,
Subject
Human medicine
Source (journal)
Acta gastro-enterologica belgica. - Bruxelles, 1946 - 1995
Volume/pages
72(2009) :1 , p. 29-33
ISSN
0001-5644
ISI
000265194500006
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
Gastro-entero-pancreatic neuroendocrine tumours (GEP NET) represent a rare and highly heterogeneous entity that often is revealed by vague and non-specific symptoms, leading to a delayed diagnosis. Here we will review some of the most regularly observed false positive and false negative cases and provide clues to recognize and manage them properly. Particularly, the value of chromogranin-A as a serum tumour marker and Somatostatin receptor scintigraphy as an imaging test, are reviewed. Indeed, chromogranin-A and other hormones, such as gastrin, as well as urinary 5-hydroxy-indolic acetic acid (5-HIAA) are often tested to diagnose NET without appraising the clinical situation, leading to extensive work-up on false bases. On the other hand, some tests are performed in situations where they do not add additional information (e.g. 5-HIAA in pancreatic or rectal NET) because invariably negative. Somatostatin receptor scintigraphy is an expensive examination, still not reimbursed in Belgium, for which indications must be carefully assessed, knowing its specificity and sensitivity.
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