Incidence rates of the primary brain tumours in Georgia - a population-based study

Abstract

BackgroundTo determine the incidence rate and to describe other basic epidemiological data of primary brain tumours in a population-based study in Georgia, performed between March 2009 and March 2011.MethodsActive case ascertainment was used to identify brain tumour cases by searching neuroradiology scan reports and medical records from all participating medical institutions, covering almost 100% of the neurooncology patients in the country.ResultsA total of 980 new cases were identified during the two-year period. For a population of almost 4.5 million, the overall annual incidence rate was 10.62 per 100,000 person-years, age-standardized to the year 2000 US population (ASR). Non-malignant tumours constituted about 65.5% of all tumours. Males accounted for 44% and females for 56% of the cases. Among classified tumours, age-standardized incidence rates by histology were highest for meningiomas (2.65/100,000), pituitary adenoma (1.23/100,000) and glioblastomas (0.51/100,000). ASR were higher among females than males for all primary brain tumours (10.35 vs. 9.48/100,000) as well as for main histology groups except for neuroepithelial, lymphomas and germ cell tumours.ConclusionsThe annual incidence rate of all primary brain tumours in Georgia, though comparable with some European registry data, is low in comparison with the 2004–2005 Central Brain Tumor Registry of the United States (CBTRUS) database, which may reflect variations in reporting and methodology. The higher percentage of unclassified tumours (37.8%) probably also affects the discrepancies between our and CBTRUS findings. However, the most frequently reported tumour was meningioma with a significant predominance in females, which is consistent with CBTRUS data.

Epidemiological Profile of Malignant Brain Neoplasms in the Northern Region of Brazil: data from the Cancer Hospital Registry of the Instituto Nacional de Câncer

“…This finding is observed in other literary studies regarding malignant primary CNS neoplasms. 2,[20][21][22] Europe had a substantial increase in the incidence of astrocytomas and of glioblastomas in patients > 40 years old, with a peak at the 6 th decade of life. 23 Similar results were also reported elsewhere.…”

Incidence of Central Nervous System Tumors in Patients Hospitalized at Split University Hospital Centre During a Ten-Year Period (January 1, 2004 – December 31, 2013)

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Geographical variation in malignant and benign/borderline brain and CNS tumor incidence: a comparison between a high-income and a middle-income country

“…Active case ascertainment captured all cases of newly diagnosed brain/CNS tumors. More information about case ascertainment and procedures has been published previously [9,10].…”