What is a nervous system tumors?, Central nervous system tumors is a common neurological surgery, the average annual incidence rate of 10/10 million, more common in 20 – 50 year old young adults. Tumor can be derived from the brain, meninges, nerves, blood vessels and embryonic remnant, some tumors occur in certain age groups. The site of its occurrence and the nature of the tumor. If childhood brain tumors and multiple supratentorial midline in common are medulloblastoma, craniopharyngioma, ependymoma, and other embryonic F residual tumor more common in adults with supratentorial tumors, such as meningioma, plastic stromal tumors, pituitary tumors and acoustic neuromas, etc.; the elderly are more common in cerebral hemispheres of the metastatic tumors, tumor distribution of God, meningioma and glioblastoma multiforme tumors and so on.
What is a nervous system tumors? , The cause of the central nervous system tumors is not fully clear, a large number of studies have shown that cells may be related to the existence of cancer gene on chromosome and acquired subject to physical, chemical, biological, such as multiple combat factors. Common risk factors are as follows:
congenital and hereditary factors, neurofibroma and ANGIORETICULOMA often occur among the same family for generations, craniopharyngioma, chordoma, teratoma and dermoid cyst of ectopic cells equivalent to embryonic primitive formation.
physical factors, brain and spinal cord after radiation therapy for several years, possibly fibrosarcoma occurred in the radiotherapy or meningioma.
chemical factors, methylcholanthrene onions, diphenyl benzo-Kun, and other benefits or housing and nitrate aromatic compounds could induce the central nervous system tumors.
viral factors: adenovirus, sarcoma virus were able to induce a variety of animals, brain tumor, but in human brain tumors and viruses isolated virus particles, none of the display is the cause of brain tumors.
after traumatic brain injury factors can induce local meningioma.
What is a nervous system tumors? , Central nervous system tumors is more complex signs and symptoms, the main positioning can be summarized as focal neurological signs and symptoms of increased intracranial pressure are two main symptoms.