Erschienen in:
01.01.2012 | Original paper
Cholecystectomy and risk of pancreatic cancer: a meta-analysis of observational studies
verfasst von:
Genlai Lin, Zhaochong Zeng, Xiaolin Wang, Zheng Wu, Jian Wang, Chenggang Wang, Qiao Sun, Yixing Chen, Hongbo Quan
Erschienen in:
Cancer Causes & Control
|
Ausgabe 1/2012
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Abstract
Objective
Data from epidemiological studies related to the association of cholecystectomy and pancreatic cancer (PaC) risk are inconsistent. We conducted a meta-analysis of observational studies to explore this relationship.
Methods
We identified studies by a literature search of Medline (from 1 January 1966) and EMBASE (from 1 January 1974), through 30 June 2011, and by searching the reference lists of pertinent articles. Summary relative risks with their 95% confidence intervals were calculated with a random-effects model. Between-study heterogeneity was assessed using Cochran’s Q statistic and the I
2.
Results
A total of 18 studies (10 case–control studies, eight cohort studies) were included in this meta-analysis. Analysis of these 18 studies found that cholecystectomy was associated with a 23% excess risk of PaC (SRR = 1.23, 95% CI = 1.12–1.35), with moderate heterogeneity among these studies (p
heterogeneity = 0.006, I
2 = 51.0%). Sub-grouped analyses revealed that the increased risk of PaC was independent of geographic location, gender, study design and confounders. There was no publication bias in the current meta-analysis.
Conclusions
The results of this meta-analysis suggest that individuals with a history of cholecystectomy may have an increased risk of pancreatic cancer.