Relationship Between Brain Tumors and Intracranial Aneurysms: A Systematic Review.

AIM: To investigate the possible relationship between intracranial aneurysms and brain neoplasms. MATERIAL AND METHODS: A comprehensive literature review involving a search of the databases PubMed and Embase to identify relevant articles was conducted in March 2021. The initial search retrieved 451 articles. After deduplication and screening of abstracts, 56 articles were selected. After reading of the full texts, 19 articles were included in the review. RESULTS: There insufficient evidence to support that people with brain neoplasms have a higher incidence rate of IAs. However, the prevalence of IAs appears to be higher in patients with pituitary tumors than in the general population. The key factors affecting prognosis were tumor type in patients with unruptured aneurysms and progression of subarachnoid hemorrhage in individuals with ruptured aneurysms. Treatment should be individualized according to patient age, tumor pathology, location, and aneurysm rupture risk. CONCLUSION: There is a lack of evidence to affirm that the existence of brain neoplasm plays a role in the formation and rupture of intracranial aneurysms. Additionally, there is insufficient evidence to confirm a greater prevalence of intracranial aneurysms in individuals with brain tumors. The association of these two disorders does not appear to worsen patient outcome. Prognosis depends on tumor pathology for malignant cases and on subarachnoid hemorrhage in patients with ruptured aneurysms.

Comparison of Prognostic Performance between Fisher and Modified Fisher Scales for Patients with Aneurysmal Subarachnoid Hemorrhage / Comparação do desempenho prognóstico entre as escalas Fisher e Fisher modificada para pacientes com hemorragia subaracnóidea aneurismática

Objective The present study aims to assess and compare the prognostic value of these two scales for predicting mortality. Method We reviewed 172 patients with aneurysmal subarachnoid hemorrhage, who were followed-up for 6 months. The Fisher and modified Fisher scales were evaluated for the prediction of mortality using logistic regressions. Results The Fisher scale was associated with mortality (odds ratio [OR]: 2; 95% confidence interval [CI]: 1.09­4.05) in the multivariate analysis. The modified Fisher scale was not associated with mortality in the multivariate analysis (OR: 1.39; 95% CI: 0.9­2.29), nor in the univariate analysis (OR: 1.24; 95%CI: 0.87­1.86). There was no significant association between Fisher score and unfavorable functional outcomes (mRS > 2) in the univariate analysis (OR: 1.33; 95%CI: 0.92­1.92), nor in the multivariate analysis (OR: 1.37; 95%CI: 0.92­2.05). There was no significant association between modified Fisher scores and unfavorable functional outcomes in the univariate analysis (OR: 1.16; 95%CI: 0.88­1.52). There was also no significant association in the multivariate analysis (OR: 1.18; 95%CI: 0.88­1.57). Conclusion Only the Fisher scale was associated with mortality. Neither of the two scales was associated with unfavorable functional outcomes (mRS > 2).

Objetivo O presente estudo tem como objetivo avaliar e comparar o valor prognós tico dessas duas escalas para predizer mortalidade. Método Revisamos 172 pacientes com hemorragia subaracnóidea aneurismática, acompanhados por 6 meses. As escalas de Fisher e modificada de Fisher foram avaliadas para a previsão de mortalidade usando regressões logísticas. Resultados A escala de Fisher foi associada à mortalidade (odds ratio [OR]: 2; intervalo de confiança [IC] 95%: 1.09­4.05) na análise multivariada. A escala Fisher modificada não foi associada à mortalidade na análise multivariada (OR: 1.39; IC95%: 0.9­2.29), nem na análise univariada (OR: 1.24; IC95%: 0.87­1.86). Não houve associação significativa entre o escore de Fisher e resultados funcionais desfavoráveis (mRS > 2) na análise univariada (OR: 1.33; IC95%: 0.92­1.92), nem na análise multivariada (OR: 1.37; IC95%: 0.92­2.05). Não houve associação significativa entre os escores modificados de Fisher e resultados funcionais desfavoráveis na análise univariada (OR: 1.16; IC95%: 0.88­1.52). Também não houve associação significativa na análise multivariada (OR: 1.18; IC95%: 0.88­1.57). Conclusão Apenas a escala de Fisher foi associada à mortalidade. Nenhuma das duas escalas foi associada a resultados funcionais desfavoráveis (mRS > 2).