Somatostatin receptors on neuroendocrine tumors--a way to intraoperative diagnosis and localization.

Ahlman, Håkan,1947Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi,Institute of Surgical Sciences, Department of Surgery (author)

Intraoperative radionuclide detection using 111In-DTPA-D-Phe1-octreotide was evaluated in five patients with midgut carcinoids and in three patients with recurrent medullary thyroid carcinoma. Three different time intervals (24, 48 and 120 hr) from injection of the radiopharmaceutical to surgery were used. At surgery, suspect tumors were measured by probe in situ and ex vivo after excision. All tissue specimens and blood samples withdrawn during surgery were measured for 111In activity, and tissue/blood activity concentration ratios were calculated. In situ measurements were valuable especially in neck surgery, where the probe was helpful not only in localization of tumors but also in the control of tumor clearance. Ex vivo measurements were helpful in diagnosing tumor tissue. All five patients with midgut carcinoids were somatostatin receptor-positive, while only three out of seven patients with medullary thyroid carcinoma were receptor-positive. The tissue/blood activity concentration ratios and probe measurement ratios were in general higher in patients with midgut carcinoid than in patients with medullary thyroid carcinoma. Of particular interest were the high tissue/blood concentration ratios in all receptor-positive patients at all time intervals studied. This fact suggests a potential role for radiolabelled octreotide in radiotherapy of these tumor types.

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Gastroenterologi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Gastroenterology and Hepatology hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Kirurgi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Surgery hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Cancer och onkologi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Cancer and Oncology hsv//eng
Carcinoid Tumor
diagnosis
surgery
Carcinoma
Neuroendocrine
diagnosis
surgery
Evaluation Studies as Topic
Humans
Intestinal Neoplasms
diagnosis
surgery
Monitoring
Intraoperative
methods
Octreotide
analogs & derivatives
diagnostic use
Pentetic Acid
analogs & derivatives
diagnostic use
Radionuclide Imaging
methods
Receptors
Somatostatin
isolation & purification
Thyroid Neoplasms
diagnosis
surgery

Tisell, Lars-Eric,1931Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi,Institute of Surgical Sciences, Department of Surgery (author)
Wängberg, Bo,1953Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi,Institute of Surgical Sciences, Department of Surgery(Swepub:gu)xwanbo (author)
Nilsson, Ola,1957Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi,Institute of Surgical Sciences, Department of Surgery(Swepub:gu)xnilol (author)
Fjälling, M (author)
Forssell-Aronsson, Eva,1961Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiofysik,Institute of Selected Clinical Sciences, Department of Radiation Physics(Swepub:gu)xforev (author)
Göteborgs universitetInstitutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi (creator_code:org_t)

By the author/editor: Ahlman, Håkan, 1 ...; Tisell, Lars-Eri ...; Wängberg, Bo, 19 ...; Nilsson, Ola, 19 ...; Fjälling, M; Forssell-Aronsso ...

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Gastroenterology ...

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Surgery

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Cancer and Oncol ...

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