الفهرس 
Epidemiology
Magnetic Resonance Imaging (MRI)Only 14 pages are availabe for public view
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Abstract
Primary tumors of the central nervous system (CNS) are a heterogeneous group of neoplasms that include benign and malignant tumors, which are known as tumors in the brain and spinal cord. Various factors such as age, race, ethnicity, gender, environmental factors, hormones, and genetics can play a role in the etiology of CNS tumors. More than 100 types of tumors that are histologically different are known as subtypes of CNS tumors. The incidence of each tumor varies with age and tissue involved. These tumors include glioma, astrocytoma, embryonal tumors, meningioma, and medulloblastoma. Pituitary and pineal gland tumors are other CNS tumors.