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The risk of developing a meningioma during and after pregnancy

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  • Jenny Pettersson-Segerlind
  • Tiit Mathiesen
  • Adrian Elmi-Terander
  • Erik Edström
  • Mats Talbäck
  • Maria Feychting
  • Giorgio Tettamanti
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Pregnancy has been associated with diagnosis or growth of meningiomas in several case reports, which has led to the hypothesis that pregnancy may be a risk factor for meningiomas. The aim of this study was to test this hypothesis in a large population-based cohort study. Women born in Sweden 1958-2000 (N = 2,204,126) were identified and matched with the Medical Birth Register and the Cancer Register. The expected number of meningioma cases and risk ratios were calculated for parous and nulliparous women and compared to the observed number of cases. Compared to parous women, meningiomas were more common among nulliparous (SIR = 1.73; 95% CI 1.52-1.95). The number of meningioma cases detected during pregnancy was lower than the expected (SIR = 0.40; 95% CI 0.20-0.72). Moreover, no increased risk was found in the first-year post-partum (SIR = 1.04; 95% CI 0.74-1.41). Contrary to our hypothesis, there was no increased risk for diagnosing a meningioma during pregnancy or 1-year post-partum. A lower detection rate during pregnancy, may reflect under-utilization of diagnostic procedures, but the actual number of meningiomas was homogenously lower among parous than nulliparous women throughout the study period, indicating that pregnancy is not a risk factor for meningioma.

Original languageEnglish
Article number9153
JournalScientific Reports
Volume11
Issue number1
Pages (from-to)9153
ISSN2045-2322
DOIs
Publication statusPublished - 28 Apr 2021

ID: 65315437