Atypical and Malignant Meningiomas: Neurooncologic Management in a Brazilian cohort.

Objective: To analyze the surgical and oncologic treatment of a Brazilian cohort of patients with grade II and III meningioma at a follow-up time of 15 years to get an overview of these patients' outcomes.

Methods: Cross-sectional study of 43 patients (26 women, 17 men; age range 20 to 83 years; average 57.72 ± 14.

Clinical Outcome, Tumor Recurrence, and Causes of Death: A Long-Term Follow-Up of Surgically Treated Meningiomas.

Objective: The medical literature still lacks information about the impact of surgery and adjuvant treatment on the life of patients with meningioma. The clinical outcome, timing of tumor recurrence, and causes of death are often overlooked. This study evaluates these data taking into account tumor localization and histologic grade.

Low-grade astrocytoma: surgical outcomes in eloquent versus non-eloquent brain areas.

A retrospective study of 81 patients with low-grade astrocytoma (LGA) comparing the efficacy of aggressive versus less aggressive surgery in eloquent and non-eloquent brain areas was conducted. Extent of surgical resection was analyzed to assess overall survival (OS) and progression- free survival (PFS). Degree of tumor resection was classified as gross total resection (GTR), subtotal resection (STR) or biopsy.

Use of intraoperative MRI for resection of gliomas.

Unlabelled: Literature has shown that extent of tumor resection has an impact on quality of life and survival of patients with gliomas. Intraoperative MRI has been used to increase resection while preserving procedure's safety.

Method: The first five patients with gliomas operated on at the University of São Paulo using intraoperative MRI are reported.