P19.11.B PRELIMINARY DATA FROM THE REGION ÖREBRO COUNTY MENINGIOMA PROJECT

• Published in: Neuro-oncology (Charlottesville, Va.) Va.), 2024-10, Vol.26 (Supplement_5), p.v113-v114
• Main Authors: Löfgren, D, Olivecrona, M
• Format: Article
• Language: English
• ISSN: 1522-8517; 1523-5866; 1523-5866
• DOI: 10.1093/neuonc/noae144.381

Abstract BACKGROUND Meningioma is typically benign and is occasionally detected during examinations due to other reasons (e.g. suspected stroke, trauma). Reported incidence figures usually come from various registers, and most reported prevalence figures are estimations derived from incidence figures and survival data. The Region Örebro County meningioma project aims to gain a better understanding of the incidence and prevalence of meningioma in the population. With these preliminary data, we seek to ascertain the practical feasibility of our proposed search method. MATERIAL AND METHODS In the Swedish county of Örebro with 302,252 inhabitants (2019), all radiology departments are within the public healthcare system. The electronic radiology archive (ERA) includes all patients who have undergone any type of radiological examination in the region since its introduction in 1996. To determine the number of individuals with meningioma in the region and when they were diagnosed, we conducted free-text searches for the word “meningioma” with various spelling variations in ERA and included all patients where the word appears in ERA referrals or responses. Subsequently, using data from the region’s electronic medical records (EMR), we excluded all patients not residing within the region. We then manually reviewed these patients’ referrals, written reports and radiology examinations, to determine whether they have meningioma, the date of diagnosis, whether it was an incidental finding, and presence of multiple meningioma. RESULTS We identified 3,428 patients, of which 3,064 have been included in this study (being residents of the region). In a preliminary review, we have been able to identify 1,663 (55 %) patients with likely meningioma. Of the 1,663 patients, 5 % had a diagnosis date before the introduction of ERA. The median age was 73 (IQR 61-82) years. There were 24 % males and 76 % females. Multiple meningioma were found in 9 % of the patients. In the preliminary review 64 % were incidental findings, while 21 % and 15 % were classified as non-incidental and indeterminate, respectively. CONCLUSION Performing free-text ERA/EMR searches is a potential avenue to achieve better coverage when investigating incidence and prevalence of a disease such as meningioma in a public healthcare setting. In our initial review, it is evident that the method identifies and can retrieve meningioma patients from the ERA. Gender distribution, median age and multiple meningioma numbe