Dr. Ajaya N Jha
Institute of Neurosciences
Tumors that begin in brain tissue are known as primary brain
Tumors. They can be benign (non-cancerous) or malignant (cancerous). Once removed surgically, benign primary
Tumors rarely grow back. They are classified by the type of tissue from which
they begin since there are many types and sub-types to it. Most of primary
Brain Tumors are named after the part of
the brain or the type of brain cell from which they originate.
The brain and spinal cord are made up of many cells,
including neurons and glial cells. Neurons are cells
that send and receive electro-chemical signals to and from the brain and
nervous system. There are about 100 billion neurons in the brain. Neurons
connect to each other to form neural networks. There are many more glial cells and there are four main functions of glial cells:
to surround neurons and hold them in place, to supply nutrients and oxygen to
neurons, to insulate one neuron from another, and to destroy pathogens and
remove dead neurons.
To understand in easy language, we can consider neuron
similar to a letter that you would want to send to your friend, and glial would be the water proof envelope in which you
enclose the letter.
The letter (neuron ) carries your message and the Envelope(glial ) protects your letter
Common Types of primary Brain Tumors are:
Brain Tumors which are caused from cancer which originates from another part of the body are known as Metastatic tumor. These Tumors are more aggressive as compared to the primary Brain Tumors. When cancer cells spread to the brain from another tumor, the process is called metastasis.
Treatment for metastatic Brain Tumors depends on where the cancer originated and how far it has spread as well as other factors, including the patient's age, type, size and location of the tumor general health, and response to previous treatment. Common Brain Tumor treatments include surgery, radiation therapy and chemotherapy.
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