Journal of Gastroenterology

, Volume 45, Issue 5, pp 560–566

Clinical usefulness of 18F-FDG PET-CT for patients with gallbladder cancer and cholangiocarcinoma

  • Seung Won Lee
  • Hong Joo Kim
  • Jung Ho Park
  • Dong Il Park
  • Yong Kyun Cho
  • Chong Il Sohn
  • Woo Kyu Jeon
  • Byung Ik Kim
Original Article—Liver, Pancreas, and Biliary Tract

DOI: 10.1007/s00535-009-0188-6

Cite this article as:
Lee, S.W., Kim, H.J., Park, J.H. et al. J Gastroenterol (2010) 45: 560. doi:10.1007/s00535-009-0188-6

Abstract

Background

Reports concerning the clinical usefulness of 18F 2-fluoro-2-deoxy-d-glucose integrated positron emission and computed tomography (18F-FDG PET-CT) for patients with gallbladder cancer and cholangiocarcinoma are relatively scarce. The purpose of this study was to assess the diagnostic value of PET-CT in relation to a conventional imaging modality, multidetector row CT (MDCT), for patients with gallbladder cancer and cholangiocarcinoma.

Methods

Ninety-nine patients with suspected gallbladder cancer and cholangiocarcinoma who underwent both PET-CT and MDCT for initial staging were included in our study. The results of these two imaging modalities for evaluating primary tumors, regional lymph nodes and distant metastases were compared with the final diagnoses based on pathological or clinical findings.

Results

A maximum standardized uptake value (SUVmax) of 3.65 was found to be the best cutoff value for detecting a malignant tumor. The overall values for the sensitivities, specificities, positive predictive values (PPVs), negative predictive values (NPVs) and the accuracies of PET-CT and MDCT for the detection of a primary tumor were 90.2, 70.6, 93.7, 60.0, 86.9% and 84.2, 70.6, 93.2, 48.0, 81.8%, respectively. PET-CT demonstrated no significant advantage over MDCT for the diagnosis of a primary tumor. PET-CT showed a significantly higher PPV (94.1 vs. 77.5%, P = 0.04) than that found for MDCT in the diagnosis of regional lymph node metastasis. Additionally, PET-CT showed a significantly higher sensitivity (94.7 vs. 63.2%, P = 0.02) than that found for MDCT in the diagnosis of distant metastasis.

Conclusions

PET-CT is valuable for detecting regional lymph node involvement and unsuspected distant metastases that are not diagnosed by MDCT.

Keywords

Gallbladder cancer Cholangiocarcinoma PET-CT Multidetector row CT Standardized uptake value 

Copyright information

© Springer 2009

Authors and Affiliations

  • Seung Won Lee
    • 1
  • Hong Joo Kim
    • 1
  • Jung Ho Park
    • 1
  • Dong Il Park
    • 1
  • Yong Kyun Cho
    • 1
  • Chong Il Sohn
    • 1
  • Woo Kyu Jeon
    • 1
  • Byung Ik Kim
    • 1
  1. 1.Department of Internal Medicine, Kangbuk Samsung HospitalSungkyunkwan University School of MedicineSeoulKorea

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