Stereotactic Radiosurgery for Intracranial Meningiomas

Area of Science:

• Neurology
• Oncology
• Pathology

Background:

• Meningiomas are the most frequent primary tumors affecting the adult brain.
• They originate from meningothelial cells within the arachnoid mater.
• Incidence rates are 9.12 per 100,000, representing 39% of all primary brain tumors.

Purpose of the Study:

• To summarize the epidemiology and risk factors of meningiomas.
• To differentiate between benign and malignant meningioma classifications.
• To provide an overview of meningioma characteristics.

Main Methods:

• Literature review of meningioma incidence and characteristics.
• Analysis of histological classifications (WHO Grades I, II, III).
• Identification of established risk factors.

Main Results:

• Meningiomas constitute a significant portion of primary and non-malignant brain tumors.
• Risk factors identified include advanced age, female sex, African-American ethnicity, radiation exposure, and neurofibromatosis II.
• Most intracranial meningiomas are benign (WHO Grade I), with atypical and anaplastic types indicating malignancy.

Conclusions:

• Meningiomas are common, primarily benign brain tumors with identifiable risk factors.
• Understanding these factors is crucial for early detection and management.
• Histological grading is essential for determining prognosis and treatment strategies.