Brain tumors are developed inside the brain or anywhere in the central nervous system or inside the skull. We name all of them ‘brain tumor’ but, actually only around half of them have malignant (cancerous) brain tumor. The rest of the tumors are non-cancerous, or just the tumors, which have not been diagnosed as non-cancerous or cancerous. It is usual because the tumors in such an area of your brain that it is too difficult to take them out as samples to make a proper diagnosis.
There are various kinds of primary brain tumors. Everyone gets its title from the kind of cells involved.
These particular tumors arise in spinal cord or brain and contain glioblastomas, astrocytomas, oligodendrogliomas, ependymoma and oligoastrocytomas.
A meningioma is such a tumor that develops from brain surrounding membrane and spinal cord. Most of the meningiomas are regarded as noncancerous.
Acoustic neuromas (schwannomas)
These are nonthreatening tumors that grow on nerves that control equilibrium and transfer hearing from inner ear to brain.
These are typically non-malignant tumors that grow in pituitary gland at the ground of brain. These tumors may harm pituitary hormones. As a result, it affects the whole body.
These tumors are the most usual cancerous brain tumors for children. A medulloblastoma rises in the lower back of brain and inclines to extent over the vertebral fluid. These tumors are not common in adults, but they may occur.
These rare and noncancerous tumors develop near brain’s pituitary gland, which secretes hormones that switch many corporeal activities. As the craniopharyngioma grows slowly, it can harm pituitary gland and other components near brain.
The cause of brain tumor
Primary brain tumors develop in brain or in tissues near it, like in the brain-casing membranes (meninges), pituitary gland, pineal gland or cranial nerves. Primary brain tumors rise when normal cells gain errors (mutations) in DNA. These changes permit cells to develop and separate at good rates. They remain living when vigorous cells die. The effect is a collection of uncharacteristic cells, which build a tumor. Primary brain tumors are less common than secondary brain tumors, in which cancer develops and spreads to brain.
Doctors actually do not know the correct reasons of primary brain tumors. There are also several risk factors in this situation. Genetic diseases move you at risk for the brain tumor. This includes neurofibromatosis and Turcot syndrome. If you have brain cancer, then you have to go through radiation therapy treatment. This treatment also increases the probabilities of brain tumors. You don’t have any proof that cell phone is responsible for brain cancer. National Cancer Institute reports that, though cell phone usage has increased considerably from 1992 to 2008, the frequency of glioma has not increased much in this particular time. Studies always exposed new paths of observation. Some European researches have considered to some extent a greater risk of brain tumors along with continuous cell phone usage.