title: Somatostatin receptor imaging with (111)In-pentetreotide in gastro-intestinal tract and lung neuroendocrine tumors-Impact on targeted treatment.
abstract: Somatostatin is a neuropeptide that confers a wide range of pharmacological properties. Indium-111-tagged pentetreotide ((111)In-P) is a radiolabeled analogue of somatostatin indicated for the in vivo scintigraphic localization of neuroendocrine tumors (NET). In cases of NET of the gastro-intestinal tract we describe the sensitivity compared to conventional anatomical imaging modalities and especially the possibility that (111)In-P may change therapeutic management into up one fourth of the patients. In cases of small cell lung carcinoma it has been used for the evaluation of somatostatin receptor status and a substantial tool for differentiation between limited and extensive disease, especially when combined with anatomical imaging methods. We also describe the radiolabeled with yttrium-90 or lutetium-177 somatostatin analogue peptides in the treatment of NET and also the use of (111)In-P for the selection of patients for targeted treatment.
authors.affiliation: 2nd Laboratory of Nuclear Medicine, AHEPA University Hospital St. Kiriakidi 1, 54636, Thessaloniki, Macedonia, Greece.
authors.forename: George
authors.initials: G
authors.lastname: Gerasimou
authors.forename: Efstratios
authors.initials: E
authors.lastname: Moralidis
authors.forename: Anna
authors.initials: A
authors.lastname: Gotzamani-Psarrakou
mesh_terms: D005770:Gastrointestinal Neoplasms / Q000000981:diagnostic imaging / Q000378:metabolism* / Q000628:therapy; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000378:metabolism* / Q000628:therapy; D057054:Molecular Imaging / Q000379:methods*; D018358:Neuroendocrine Tumors / Q000000981:diagnostic imaging / Q000378:metabolism* / Q000628:therapy; D011877:Radionuclide Imaging; D017481:Receptors, Somatostatin / Q000378:metabolism*; D013004:Somatostatin / Q000031:analogs & derivatives*
chemical_list: D017481:Receptors, Somatostatin; D013004:Somatostatin; C081788:pentetreotide