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Published in: Cancer Imaging 1/2015

Open Access 01-12-2015 | Research article

Prognostic significance of 18FDG PET/CT in colorectal cancer patients with liver metastases: a meta-analysis

Authors: Qian Xia, Jianjun Liu, Cheng Wu, Shaoli Song, Linjun Tong, Gang Huang, Yuanbo Feng, Yansheng Jiang, Yewei Liu, Ting Yin, Yicheng Ni

Published in: Cancer Imaging | Issue 1/2015

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Abstract

Background

The role of 18-fluorodeoxyglucose positron emission tomography CT (18FDG PET/CT), as a prognostic factor for survival in colorectal cancer patients with liver metastases, is still controversial. We sought to perform a meta-analysis of the literature to address this issue.

Methods

A systematic literature search was performed to identify the studies that associated 18FDG PET/CT to clinical survival outcomes of patients with liver metastases. Methodological qualities of the included studies were also assessed. The summarized hazard ratio (HR) was estimated by using fixed- or random-effect model according to heterogeneity between trails.

Results

By analyzing a total of 867 patients from 15 studies, we found that PET/CT for metabolic response to the therapy was capable of predicting event-free survival (EFS) and overall survival (OS) with statistical significance, and the HR was 0.45 (95 % confidence interval [CI], 0.26–0.78) and 0.36 (95 % CI, 0.18–0.71), respectively. Furthermore, pre-treatment 18FDG PET/CT with high standardized uptake value (SUV) was also significantly associated with poorer OS HR, 1.24; (95 % CI, 1.06–1.45). However, we did not find a statistically significant effect of post-treatment SUV for predicting OS HR, 1.68; (95 % CI, 0.63–4.52).

Conclusions

The present meta-analysis confirms that 18FDG PET/CT is a useful tool to help predict survival outcomes in patients with liver metastases.
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Metadata
Title
Prognostic significance of 18FDG PET/CT in colorectal cancer patients with liver metastases: a meta-analysis
Authors
Qian Xia
Jianjun Liu
Cheng Wu
Shaoli Song
Linjun Tong
Gang Huang
Yuanbo Feng
Yansheng Jiang
Yewei Liu
Ting Yin
Yicheng Ni
Publication date
01-12-2015
Publisher
BioMed Central
Published in
Cancer Imaging / Issue 1/2015
Electronic ISSN: 1470-7330
DOI
https://doi.org/10.1186/s40644-015-0055-z

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