Incidence trends and survival analysis of atypical meningiomas: a population-based study from 2004 to 2018

Matthew J Recker1,2, Cathleen C Kuo3, Dheerendra Prasad1,2,4,5

  • 1Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences at the University at Buffalo, 100 High Street, Suite B4, Buffalo, NY, 14203, USA.

Abstract

Insights

The incidence of atypical meningioma is increasing faster than all meningiomas. Continued monitoring and improved outcomes for atypical meningioma patients are crucial due to this rising trend.

Area of Science:

  • Neuro-oncology
  • Epidemiology
  • Cancer Research

Background:

  • Atypical meningiomas present intermediate features between benign and malignant types.
  • The incidence trends of atypical meningiomas, particularly concerning World Health Organization (WHO) classification changes, require further investigation.

Purpose of the Study:

  • To analyze the incidence trends of atypical meningiomas in comparison to all meningiomas.
  • To evaluate survival rates and identify prognostic factors for atypical meningioma patients.

Main Methods:

  • Utilized the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) database (2004-2018).
  • Calculated age-adjusted incidence rates and annual percent change (APC) using joinpoint regression.
  • Analyzed survival using Kaplan-Meier method and Cox proportional hazards models.

Main Results:

  • Atypical meningioma incidence increased significantly faster (APC 5.6%) than all meningiomas (APC 2.5%).
  • 1, 3, 5, and 10-year survival rates for atypical meningiomas were 91.9%, 81.3%, 68.8%, and 34.3%, respectively.
  • Male sex, older age (≥60 years), and large tumor size (>5 cm) were independent risk factors for poor prognosis.

Conclusions:

  • Atypical meningioma incidence is rising relative to all meningiomas.
  • Ongoing surveillance of atypical meningioma incidence and mortality is essential to confirm persistent uptrends.
  • Enhanced efforts to improve outcomes for atypical meningioma patients are necessary given the increasing incidence.

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