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Somatostatin and somatostatin analogues in medullary thyroid carcinoma.

Identifieur interne : 004303 ( Main/Exploration ); précédent : 004302; suivant : 004304

Somatostatin and somatostatin analogues in medullary thyroid carcinoma.

Auteurs : RBID : pubmed:8895910

English descriptors

Abstract

Medullary thyroid carcinoma (MTC) is a neuroendocrine tumour characterized by the production and secretion of calcitonin. MTC tumours may express functional somatostatin receptors (hSSTR). A significant proportion of hSSTR receptor-positive MTC tumours, including metastatic disease, may be visualized in vivo through 111In-pentetreotide scintigraphy. Four patients with recurrent/metastatic disease, who had previously been assessed with 111In-anti-CEA monoclonal antibody fragment [F(ab')2] imaging, were evaluated. 111In-pentetreotide scintigraphy localized all known disease sites. Furthermore, mediastinal disease was detected in one patient with negative conventional, and 111In-anti-CEA F(ab')2 imaging studies. The detection of somatostatin within the tumour (2 patients), or negative octreotide challenges (2 patients), did not affect the outcome of 111In-pentetreotide scintigraphy. In conclusion, 111In-pentetreotide scintigraphy appears at least as effective as 111In-anti-CEA F(ab')2 imaging and should be considered in the diagnostic evaluation of MTC, particularly in the setting of recurrent/metastatic disease not detected by conventional means.

PubMed: 8895910

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Le document en format XML

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<title xml:lang="en">Somatostatin and somatostatin analogues in medullary thyroid carcinoma.</title>
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<name sortKey="O Byrne, K J" uniqKey="O Byrne K">K J O'Byrne</name>
<affiliation wicri:level="1">
<nlm:affiliation>Department of Endocrinology, St James's Hospital, Dublin, Ireland.</nlm:affiliation>
<country xml:lang="fr">Irlande (pays)</country>
<wicri:regionArea>Department of Endocrinology, St James's Hospital, Dublin</wicri:regionArea>
</affiliation>
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<author>
<name sortKey="O Hare, N" uniqKey="O Hare N">N O'Hare</name>
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<name sortKey="Sweeney, E" uniqKey="Sweeney E">E Sweeney</name>
</author>
<author>
<name sortKey="Freyne, P J" uniqKey="Freyne P">P J Freyne</name>
</author>
<author>
<name sortKey="Cullen, M J" uniqKey="Cullen M">M J Cullen</name>
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<term>Antibodies, Monoclonal (diagnostic use)</term>
<term>Calcitonin (metabolism)</term>
<term>Carcinoembryonic Antigen (metabolism)</term>
<term>Carcinoma, Medullary (metabolism)</term>
<term>Carcinoma, Medullary (radionuclide imaging)</term>
<term>Carcinoma, Medullary (secondary)</term>
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<term>Immunoglobulin Fab Fragments (diagnostic use)</term>
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<term>Neoplasm Recurrence, Local (radionuclide imaging)</term>
<term>Radioimmunodetection</term>
<term>Receptors, Somatostatin (metabolism)</term>
<term>Somatostatin (analogs & derivatives)</term>
<term>Somatostatin (diagnostic use)</term>
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<term>Carcinoembryonic Antigen</term>
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<term>Somatostatin</term>
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<term>Carcinoma, Medullary</term>
<term>Thyroid Neoplasms</term>
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<term>Carcinoma, Medullary</term>
<term>Neoplasm Recurrence, Local</term>
<term>Thyroid Neoplasms</term>
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<term>Carcinoma, Medullary</term>
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<term>Aged</term>
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<div type="abstract" xml:lang="en">Medullary thyroid carcinoma (MTC) is a neuroendocrine tumour characterized by the production and secretion of calcitonin. MTC tumours may express functional somatostatin receptors (hSSTR). A significant proportion of hSSTR receptor-positive MTC tumours, including metastatic disease, may be visualized in vivo through 111In-pentetreotide scintigraphy. Four patients with recurrent/metastatic disease, who had previously been assessed with 111In-anti-CEA monoclonal antibody fragment [F(ab')2] imaging, were evaluated. 111In-pentetreotide scintigraphy localized all known disease sites. Furthermore, mediastinal disease was detected in one patient with negative conventional, and 111In-anti-CEA F(ab')2 imaging studies. The detection of somatostatin within the tumour (2 patients), or negative octreotide challenges (2 patients), did not affect the outcome of 111In-pentetreotide scintigraphy. In conclusion, 111In-pentetreotide scintigraphy appears at least as effective as 111In-anti-CEA F(ab')2 imaging and should be considered in the diagnostic evaluation of MTC, particularly in the setting of recurrent/metastatic disease not detected by conventional means.</div>
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<Title>Nuclear medicine communications</Title>
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<AbstractText>Medullary thyroid carcinoma (MTC) is a neuroendocrine tumour characterized by the production and secretion of calcitonin. MTC tumours may express functional somatostatin receptors (hSSTR). A significant proportion of hSSTR receptor-positive MTC tumours, including metastatic disease, may be visualized in vivo through 111In-pentetreotide scintigraphy. Four patients with recurrent/metastatic disease, who had previously been assessed with 111In-anti-CEA monoclonal antibody fragment [F(ab')2] imaging, were evaluated. 111In-pentetreotide scintigraphy localized all known disease sites. Furthermore, mediastinal disease was detected in one patient with negative conventional, and 111In-anti-CEA F(ab')2 imaging studies. The detection of somatostatin within the tumour (2 patients), or negative octreotide challenges (2 patients), did not affect the outcome of 111In-pentetreotide scintigraphy. In conclusion, 111In-pentetreotide scintigraphy appears at least as effective as 111In-anti-CEA F(ab')2 imaging and should be considered in the diagnostic evaluation of MTC, particularly in the setting of recurrent/metastatic disease not detected by conventional means.</AbstractText>
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