Abstract
Background: We retrospectively compared the accuracy of somatostatin receptor scintigraphy (SRS) with that of helical computed tomography (CT) in the detection and localization of primary and metastatic neuroendocrine tumors.
Methods: A medical record search identified 27 patients with known or clinically suspected neuroendocrine tumors who underwent helical CT and SRS within 3 months of one another at our institution. CT images were evaluated retrospectively by two blinded radiologists who used consensus reading. Images were evaluated for the presence or absence of primary tumor and hepatic and extrahepatic metastases. CT results were compared with the SRS report as interpreted by the nuclear medicine physicians. The results of the surgical, clinical follow-up, and pathologic findings were considered as the gold standard. Sensitivity, specificity, and accuracy were calculated for both imaging techniques. In addition, McNemar analysis was performed to determine statistically significant differences between CT and SRS.
Results: Helical CT was more sensitive than SRS in the detection of extrahepatic metastases, and the difference between the two imaging modalities was statistically significant (p = 0.0312) as determined by the McNemar chi-square test. However, the difference between CT and SRS in detecting primary neuroendocrine tumors, hepatic metastasis, and combined hepatic and extrahepatic metastasis was not statistically significant (p = 0.625, 1.000, and 1.000, respectively).
Conclusion: Helical CT and SRS have similar sensitivity, specificity, and accuracy in detecting primary neuroendocrine tumor and hepatic metastasis. However, helical CT appears to be more sensitive in detecting extrahepatic metastasis from primary neuroendocrine tumors.
Similar content being viewed by others
References
AG Pearse (1969) ArticleTitleThe cytochemistry and ultrastructure of polypeptide hormone-producing cells of the APUD series and the embryologic, physiologic and pathologic implications of the concept J Histochem Cytochem 17 303–313 Occurrence Handle1:CAS:528:DyaF1MXktVWgu7k%3D Occurrence Handle4143745
MB Lobrano K McCarthy L Adams H Neitzschman (1997) ArticleTitleMetastatic carcinoid tumor imaged with CT and a radiolabeled somatostatin analog: a case report Am J Gastroenterol 92 513–515 Occurrence Handle1:STN:280:ByiB387ktlI%3D Occurrence Handle9068482
RR Perry AI Vinik (1996) ArticleTitleEndocrine tumors of the gastrointestinal tract Annu Rev Med 47 57–68 Occurrence Handle10.1146/annurev.med.47.1.57 Occurrence Handle1:CAS:528:DyaK28XitlSnsbY%3D Occurrence Handle8712803
DJ Kwekkeboom SW Lamberts JD Habbema EP Krenning (1996) ArticleTitleCost-effectiveness analysis of somatostatin receptor scintigraphy J Nucl Med 37 886–892 Occurrence Handle1:STN:280:BymA3c%2FjsVE%3D Occurrence Handle8683305
CM King RH Reznek J Bomanji et al. (1993) ArticleTitleImaging neuroendocrine tumours with radiolabelled somatostatin analogues and X-ray computed tomography: a comparative study Clin Radiol 48 386–391 Occurrence Handle1:STN:280:ByuC38zltlU%3D Occurrence Handle8293643
W Shi CF Johnston KD Buchanan et al. (1998) ArticleTitleLocalization of neuroendocrine tumours with [111In]DTPA-octreotide scintigraphy (Octreoscan): a comparative study with CT and MR imaging QJM 91 295–301 Occurrence Handle10.1093/qjmed/91.4.295 Occurrence Handle1:STN:280:DyaK1czjtFGkug%3D%3D Occurrence Handle9666953
IR Kamel MA Choti KM Horton et al. (2003) ArticleTitleSurgically staged focal liver lesions: accuracy and reproducibility of dual-phase helical CT for detection and characterization Radiology 227 752–757 Occurrence Handle12773679
KD Hopper K Singapuri A Finkel (2000) ArticleTitleBody CT and oncologic imaging Radiology 215 27–40 Occurrence Handle1:STN:280:DC%2BD3c3hslWlug%3D%3D Occurrence Handle10751464
C Valls E Andia A Sanchez et al. (2001) ArticleTitleHepatic metastases from colorectal cancer: preoperative detection and assessment of resectability with helical CT Radiology 218 55–60 Occurrence Handle1:STN:280:DC%2BD3MzitFCltg%3D%3D Occurrence Handle11152779
H Frucht JL Doppman JA Norton et al. (1989) ArticleTitleGastrinomas: comparison of MR imaging with CT, angiography, and US Radiology 171 713–717 Occurrence Handle1:STN:280:BiaB2c7itVw%3D Occurrence Handle2655004
GD Slooter A Mearadji WA Breeman et al. (2001) ArticleTitleSomatostatin receptor imaging, therapy and new strategies in patients with neuroendocrine tumours Br J Surg 88 31–40 Occurrence Handle10.1046/j.1365-2168.2001.01644.x Occurrence Handle1:STN:280:DC%2BD3M7isFGguw%3D%3D Occurrence Handle11136306
LK Kvols M Buck CG Moertel et al. (1987) ArticleTitleTreatment of metastatic islet cell carcinoma with a somatostatin analogue (SMS 201-995) Ann Intern Med 107 162–168 Occurrence Handle1:STN:280:BiiB28fps1w%3D Occurrence Handle2886085
C Mahler J Verhelst M de Longueville A Harris (1990) ArticleTitleLong-term treatment of metastatic medullary thyroid carcinoma with the somatostatin analogue octreotide Clin Endocrinol (Oxf) 33 261–269 Occurrence Handle1:STN:280:By6D3s%2FgsFE%3D
EK Fishman (2001) ArticleTitleFrom the RSNA refresher courses: CT angiography: clinical applications in the abdomen Radiographics 21 S3–S16 Occurrence Handle11598244
J Rydberg KA Buckwalter KS Caldemeyer et al. (2000) ArticleTitleMultisection CT: scanning techniques and clinical applications Radiographics 20 1787–1806 Occurrence Handle1:STN:280:DC%2BD3M7gtlSisA%3D%3D Occurrence Handle11112829
H Ji JD McTavish KJ Mortele et al. (2001) ArticleTitleHepatic imaging with multidetector CT Radiographics 21 S71–S80 Occurrence Handle11598249
SW Lamberts JC Reubi WH Bakker EP Krenning (1990) ArticleTitleSomatostatin receptor imaging with 123I-Tyr3-octreotide Z Gastroenterol 28 IssueIDsuppl 2 20–21 Occurrence Handle1980773
O Kisker RJ Weinel J Geks et al. (1996) ArticleTitleValue of somatostatin receptor scintigraphy for preoperative localization of carcinoids World J Surg 20 162–167 Occurrence Handle10.1007/s002689900025 Occurrence Handle1:STN:280:BymA38rmtVE%3D Occurrence Handle8661812
H Scherubl M Bader U Fett et al. (1993) ArticleTitleSomatostatin-receptor imaging of neuroendocrine gastroenteropancreatic tumors Gastroenterology 105 1705–1709 Occurrence Handle1:STN:280:ByuD2svosFU%3D Occurrence Handle7902821
O Schillaci A Spanu F Scopinaro et al. (2003) ArticleTitleSomatostatin receptor scintigraphy in liver metastasis detection from gastroenteropancreatic neuroendocrine tumors J Nucl Med 44 359–368 Occurrence Handle1:CAS:528:DC%2BD3sXislKntbo%3D Occurrence Handle12621001
R Lebtahi G Cadiot L Sarda et al. (1997) ArticleTitleClinical impact of somatostatin receptor scintigraphy in the management of patients with neuroendocrine gastroenteropancreatic tumors J Nucl Med 38 853–858 Occurrence Handle1:STN:280:ByiA3s3ps1M%3D Occurrence Handle9189129
Y Krausz J Bar-Ziv RB de Jong et al. (1998) ArticleTitleSomatostatin-receptor scintigraphy in the management of gastroenteropancreatic tumors Am J Gastroenterol 93 66–70 Occurrence Handle10.1016/S0002-9270(97)00024-5 Occurrence Handle1:STN:280:DyaK1c7gslyltA%3D%3D Occurrence Handle9448177
V Briganti M Matteini P Ferri et al. (2001) ArticleTitleOctreoscan SPET evaluation in the diagnosis of pancreas neuroendocrine tumors Cancer Biother Radiopharm 16 515–524 Occurrence Handle10.1089/10849780152752119 Occurrence Handle1:STN:280:DC%2BD38%2FmtlKqsQ%3D%3D Occurrence Handle11789028
A Chiti S Fanti G Savelli et al. (1998) ArticleTitleComparison of somatostatin receptor imaging, computed tomography and ultrasound in the clinical management of neuroendocrine gastro-entero-pancreatic tumours Eur J Nucl Med 25 1396–1403 Occurrence Handle10.1007/s002590050314 Occurrence Handle1:CAS:528:DyaK1cXmtFegt7w%3D Occurrence Handle9818279
SW Lamberts JC Reubi EP Krenning (1993) ArticleTitleValidation of somatostatin receptor scintigraphy in the localization of neuroendocrine tumors Acta Oncol 32 167–170 Occurrence Handle1:STN:280:ByyA3M3lslM%3D Occurrence Handle8391830
EP Krenning DJ Kwekkeboom WH Bakker et al. (1993) ArticleTitleSomatostatin receptor scintigraphy with [111In-DTPA-D-Phe1] [123I-Tyr3]- and [111In-DTPA-D-Phe1] [123I-Tyr3]-octreotide: the Rotterdam experience with more than 1000 patients Eur J Nucl Med 20 716–731 Occurrence Handle1:STN:280:ByuD3cbhtVw%3D Occurrence Handle8404961
A Oliaro PL Filosso M Bello et al. (1997) ArticleTitleUse of 111In-DTPA-octreotide scintigraphy in the diagnosis of neuroendocrine and non-neuroendocrine tumors of the lung. Preliminary results J Cardiovasc Surg (Torino) 38 313–315 Occurrence Handle1:STN:280:ByiA28zhs1Q%3D
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kumbasar, B., Kamel, I., Tekes, A. et al. Imaging of neuroendocrine tumors: accuracy of helical CT versus SRS. Abdom Imaging 29, 696–702 (2004). https://doi.org/10.1007/s00261-003-0162-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00261-003-0162-3