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Glioma Epidemiology in the Central Tunisian Population: 1993-2012

  • Trabelsi, Saoussen ;
  • Brahim, Dorra H'mida-Ben ;
  • Ladib, Mohamed ;
  • Mama, Nadia ;
  • Harrabi, Imed ;
  • Tlili, Kalthoum ;
  • Yacoubi, Mohamed Tahar ;
  • Krifa, Hedi ;
  • Hmissa, Sihem ;
  • Saad, Ali ;
  • Mokni, Moncef
  • Published : 2014.11.06

Abstract

Background: Glioma is a heterogeneous central nervous system (CNS) tumor group that encompasses different histological subtypes with high variability in prognosis. The lesions account for almost 80% of primary malignant brain tumors. The aim of this study is to extend our understanding of the glioma epidemiology in the central Tunisian region. Materials and Methods: We analyzed 393 gliomas recorded in cancer registry of central Tunisia from 1993 to 2012. Crude incidence rates (CR) and world age-standardized rates (ASR) were estimated using annual population data size and age structure. Statistic correlations were established using Chi-square and Kaplan-Meier test. Results: Tunisian glioma patients were identified with a mean age at diagnosis of 48 years and 1.5 sex ratio (male/female). During the 19 years period of study the highest incidence value was observed in male group between 1998 and 2002 (CR: 0.28, ASR: 0.3). Incidence results underline increasing high grade glioma occurring in the adulthood in the last period (2007-2012). Median survival was 27 months, with 1-, 2- and 5-year survival rates of 42%, 30% and 26%, respectively. Survival was greater in patients with younger age, lower tumor grade, infratentrial tumor location and undergoing a palliative treatment. Conclusions: This central Tunisia gliomas registry study provides important information that could improve glioma management and healthcare practice.

Keywords

Glioma;epidemiology;incidence;Tunisia;trends

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