Overview

A brain tumor is a clump or magnification of abnormal cells in your brain.
Many different types of brain tumors exist. Some brain tumors are noncancerous (approachable), and some brain tumors are cancerous (malignant). Brain tumors can undertake in your brain (primary brain tumors), or cancer can undertake in other parts of your body and stretch out to your brain as secondary (metastatic) brain tumors.
How quickly a brain tumor increase can vary very much. The growing rate as well as the location of a brain tumor determines how it will affect the function of your nervous system.

Symptoms

The signs and indication of a brain tumor vary to a great expanse and depend on the brain tumor’s size, position and figure of growth.

General signs and indication caused by brain tumors may include:

•           New onset or change in model of headaches

•           Headaches that gradually become more recurrent and more severe

•           Unexplained nausea or vomiting

•           Vision problems, such as dim vision, double vision or loss of surrounding vision

•           Gradual loss of sensation or activity in an arm or a leg

•           Difficulty with balance

•           Speech difficulties

•           Feeling very tired

•           Confusion in everyday matters

•           Difficulty making decisions

•           Inability to follow simple commands

•           Personality or behavior changes

•           Seizures, in particular in someone who doesn’t have a history of seizures

•           Hearing problems

 

When to see a doctor or what medicine to take?

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Causes

Brain tumors that begin in the brain

Primary brain tumors begin in the brain itself or in tissues close to it, such as in the brain-covering membranes (meninges), cranial nerves, pituitary gland or pineal gland.

Primary brain tumors begin when normal cells spread changes (mutations) in their DNA. A cell’s DNA contains the instructions that tell a cell what to do. The mutations tell the cells to grow and divide quickly and to continue living when healthy cells would die. The result is a filling of abnormal cells, which forms a tumor.

In adults, primary brain tumors are much less common than are secondary brain tumors, in which cancer start to another place and expansion to the brain.

Many different types of primary brain tumors exist. each one its name from the type of cells connected. Examples include:

•           Gliomas. These tumors start in the brain or spinal cord and comprise astrocytomas, ependymomas, glioblastomas, oligoastrocytomas and oligodendrogliomas.

•           Meningiomas. A meningioma is a tumor that arises from the membranes that shut in your brain and spinal cord (meninges). Most meningiomas are noncancerous.

•           Acoustic neuromas (schwannomas). These are motherly tumors that develop on the nerves that monitoring balance and hearing leading from your inner ear to your brain.

•           Pituitary adenomas. These are tumors that spread in the pituitary gland at the base of the brain. These tumors can affect the pituitary hormones with effects Entirely the body.

•           Medulloblastomas. These cancerous brain tumors are most common in children, though they can happen at any age. A medulloblastoma starts in the lower back part of the brain and tends to spread through the spinal fluid.

•           Germ cell tumors. Germ cell tumors may develop during childhood where the testicles or ovaries will form. But sometimes germ cell tumors affect other parts of the body, such as the brain.

•           Craniopharyngiomas. These rare tumors start near the brain’s pituitary gland, which secretes hormones that control many body functions. As the craniopharyngioma slowly grows, it can affect the pituitary gland and other structures near the brain.

Cancer that begins elsewhere and spreads to the brain

Secondary (metastatic) brain tumors are tumors that result from cancer that starts elsewhere in your body and then spreads (metastasizes) to your brain.

Secondary brain tumors most often occur in people who have a history of cancer. Rarely, a metastatic brain tumor may be the first sign of cancer that began elsewhere in your body.

In adults, secondary brain tumors are far more common than are primary brain tumors.

Any cancer can expansion to the brain, but common types include:

•           Breast cancer

•           Colon cancer

•           Kidney cancer

•           Lung cancer

•           Melanoma

Risk factors

In most people with primary brain tumors, the cause of the tumor isn’t clear. But doctors have identified some factors that may increase your risk of a brain tumor.Exposure to radiation. People who have been exposed to a type of radiation called ionizing radiation have an increased risk of brain tumor. Examples of ionizing radiation include radiation therapy used to treat cancer and radiation exposure caused by atomic bombs.

• Family history of brain tumors. A small portion of brain tumors occurs in people with a family history of brain tumors or a family history of genetic syndromes that increase the risk of brain tumors.