Source:http://linkedlifedata.com/resource/pubmed/id/10604128
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rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
2000-2-1
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pubmed:abstractText |
Neuroendocrine tumours of the gastro-entero-pancreatic tract are an uncommon clinical entity and are believed to arise from the endocrine cells of the gastrointestinal tract. Somatostatin receptor imaging is a diagnostic tool which allows visualization of somatostatin receptor bearing tumours. This scintigraphic procedure is performed with indium-111 labelled octreotide, a somatostatin analogue, chelated with diethylene triamine penta-acetic acid. Radionuclide imaging consists in detecting the biodistribution of somatostatin receptors, normally expressed on the cell surface of neuroendocrine gastro-entero-pancreatic tumours. To date, five types of this receptor have been cloned: indium-111-labelled-pentetreotide can visualize tumours expressing type 2 and 5 receptors. The results of our study, which involved 81 neuroendocrine gastro-entero-pancreatic tumour patients, confirm the superior sensitivity of somatostatin receptor imaging (61%) for primary tumour evaluation with respect to conventional imaging modalities such as computed tomography (40%) or ultrasound (28%). Scintigraphic findings in metastatic liver disease proved to have a sensitivity of 89% for somatostatin receptor imaging, versus 81% and 88% for computed tomography and ultrasound, respectively. In 23% of patients, lesions were found with somatostatin receptor imaging which had been missed using the other diagnostic modalities; in 26% of the patients the therapeutic approach was modified after somatostatin receptor imaging.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
1125-8055
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
31 Suppl 2
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
S190-4
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:10604128-Adolescent,
pubmed-meshheading:10604128-Adult,
pubmed-meshheading:10604128-Aged,
pubmed-meshheading:10604128-Aged, 80 and over,
pubmed-meshheading:10604128-Female,
pubmed-meshheading:10604128-Gastrointestinal Neoplasms,
pubmed-meshheading:10604128-Humans,
pubmed-meshheading:10604128-Magnetic Resonance Imaging,
pubmed-meshheading:10604128-Male,
pubmed-meshheading:10604128-Middle Aged,
pubmed-meshheading:10604128-Neuroendocrine Tumors,
pubmed-meshheading:10604128-Octreotide,
pubmed-meshheading:10604128-Pancreatic Neoplasms,
pubmed-meshheading:10604128-Receptors, Somatostatin,
pubmed-meshheading:10604128-Sensitivity and Specificity,
pubmed-meshheading:10604128-Tomography, Emission-Computed, Single-Photon,
pubmed-meshheading:10604128-Tomography, X-Ray Computed
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pubmed:year |
1999
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pubmed:articleTitle |
Imaging of neuroendocrine gastro-entero-pancreatic tumours using radiolabelled somatostatin analogues.
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pubmed:affiliation |
Nuclear Medicine Department, National Cancer Institute, Milan, Italy.
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pubmed:publicationType |
Journal Article,
Clinical Trial,
Comparative Study
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