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What are tumors?

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Tumors are clumps of cells that grow abnormally from normal tissue. Some tumors in the brain are non-cancerous, or benign. Others are cancerous, or malignant. They may start in the brain, or they may spread from elsewhere in the body. They may grow quickly or they may remain stable.

From: Brain Lesions: Causes, Symptoms, Treatments WebMD Medical Reference

Reviewed by Neil Lava on September 16, 2018

Medically Reviewed on 09/16/2018

SOURCES:

Merriam-Webster Medical Dictionary: "Abscess;" "Infarct;" "Lesion;" and "Tumor."

WebMD Medical Reference: "Alzheimer's Disease: The Basics."

eMedicineHealth: "Multiple Sclerosis (MS) FAQs;" "The Central Nervous System and Multiple Sclerosis--Causes;" "Brain Abscess;" "Alzheimer Disease;" "Arteriovenous Malformations;" "Stroke, Ischemic;" "Cerebral Palsy;" and "Brain Metastasis."

WebMD Medical Reference from Healthwise. "Adult Brain Tumors Treatment (PDQ®) - Classification)."

Reviewed by Neil Lava on September 16, 2018

SOURCES:

Merriam-Webster Medical Dictionary: "Abscess;" "Infarct;" "Lesion;" and "Tumor."

WebMD Medical Reference: "Alzheimer's Disease: The Basics."

eMedicineHealth: "Multiple Sclerosis (MS) FAQs;" "The Central Nervous System and Multiple Sclerosis--Causes;" "Brain Abscess;" "Alzheimer Disease;" "Arteriovenous Malformations;" "Stroke, Ischemic;" "Cerebral Palsy;" and "Brain Metastasis."

WebMD Medical Reference from Healthwise. "Adult Brain Tumors Treatment (PDQ®) - Classification)."

Reviewed by Neil Lava on September 16, 2018

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How can I find out more about brain lesions?

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