alexa Detection of hepatic metastases from cancers of the gastrointestinal tract by using noninvasive imaging methods (US, CT, MR imaging, PET): a meta-analysis.
Oncology

Oncology

Journal of Cancer Science & Therapy

Author(s): Kinkel K, Lu Y, Both M, Warren RS, Thoeni RF

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Abstract PURPOSE: To perform a meta-analysis to compare current noninvasive imaging methods (ultrasonography [US], computed tomography [CT], magnetic resonance [MR] imaging, and (18)F fluorodeoxyglucose [FDG] positron emission tomography [PET]) in the detection of hepatic metastases from colorectal, gastric, and esophageal cancers. MATERIALS AND METHODS: A MEDLINE literature search and review of article bibliographies and our institutional charts of patients with colorectal cancer identified data with histopathologic correlation or at least 6 months of patient follow-up. Two authors independently abstracted data sets and excluded data without contingency tables or data published more than once. Summary-weighted estimates of sensitivity were obtained and stratified according to specificity of less than 85\% or 85\% and higher. A covariate analysis was used to evaluate the influence of patient- or study-related factors on sensitivity. RESULTS: Among 111 data sets, nine US (509 patients), 25 CT (1,747 patients), 11 MR imaging (401 patients), and nine PET (423 patients) data sets met the inclusion criteria. In studies with a specificity higher than 85\%, the mean weighted sensitivity was 55\% (95\% CI: 41, 68) for US, 72\% (95\% CI: 63, 80) for CT, 76\% (95\% CI: 57, 91) for MR imaging, and 90\% (95\% CI: 80, 97) for FDG PET. Results of pairwise comparison between imaging modalities demonstrated a greater sensitivity of FDG PET than US (P =.001), CT (P =.017), and MR imaging (P =.055). CONCLUSION: At equivalent specificity, FDG PET is the most sensitive noninvasive imaging modality for the diagnosis of hepatic metastases from colorectal, gastric, and esophageal cancers. Copyright RSNA, 2002 This article was published in Radiology and referenced in Journal of Cancer Science & Therapy

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