Elsevier

Annals of Oncology

Volume 15, Issue 8, August 2004, Pages 1256-1260
Annals of Oncology

Miscellaneous tumors
Hypertension as a risk factor for glioma? Evidence from a population-based study of comorbidity in glioma patients

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Abstract

Background: Little is known about the aetiology of glioma. Research is often hampered by the low incidence and high mortality of the disease. Concomitant diseases in glioma patients may indicate possible aetiological pathways. We therefore studied comorbidity in glioma patients.

Patients and methods: We performed a case-control study using population-based data from the Eindhoven Cancer Registry. We compared prevalences of concomitant diseases in 510 glioma patients with two reference cancer populations from the same registry.

Results: Compared with all other cancer patients, a significantly higher prevalence of hypertension was found in glioma patients for age categories 60–74 years [odds ratio (OR) 1.37; 95% confidence interval (CI) 1.02–1.84] and 75+ years (OR 2.37; 95% CI 1.34–4.21). The associaton was most pronounced in elderly men and in astrocytic glioma, with a maximum in age category 75+ years (OR 5.86; 95% CI 2.20–15.7). The prevalence of cerebrovascular disease was higher in glioma patients >45 years old (OR 1.67; 95% CI 1.12–2.47), whereas the prevalence of other cancers was lower (OR 0.64; 95% CI 0.48–0.87). No consistent associations were detected for several other concomitant diseases.

Conclusions: Our data suggest an association between hypertension and glioma, although questions remain about causality and the possible mechanisms. We hypothesise that this association is mediated through potentially neurocarcinogenic effects of antihypertensive medication.

Keywords

aetiology
comorbidity
concomitant disease
glioma
hypertension

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