Diffuse brainstem glioma: prognostic factors

Area of Science:

• Neuro-oncology
• Radiology
• Pathology

Background:

• Brainstem gliomas were historically viewed as a uniform entity.
• Advances in MRI revealed heterogeneity within brainstem gliomas.
• Certain subgroups exhibit improved long-term survival prognoses.

Purpose of the Study:

• To retrospectively analyze prognostic factors in histopathologically confirmed brainstem gliomas.
• To assess the significance of histological grade, patient age, and MRI findings on survival.
• To identify key predictors of long-term outcomes in brainstem glioma patients.

Main Methods:

• Evaluation of 100 patients with brainstem glioma (63 adults, 37 children).
• Histopathological diagnosis and grading of gliomas.
• Analysis of MRI findings, including contrast enhancement patterns.
• Kaplan-Meier survival analysis and Cox proportional hazards regression.

Main Results:

• Mean survival: 57 months for low-grade vs. 13.8 months for high-grade gliomas (p < 0.001).
• Mean survival: 54.2 months for non-enhancing vs. 21.7 months for enhancing lesions (p < 0.001).
• Multivariate analysis identified histological grade as the sole significant prognostic factor (p < 0.001).

Conclusions:

• Histological grade and MRI features are significant prognostic indicators for brainstem glioma survival.
• In multivariate analysis, only histological grade proved to be a significant predictor of patient survival.
• This highlights the critical role of tumor grading in determining prognosis for brainstem gliomas.