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From Biology-Online Dictionary | Biology-Online Dictionary
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(Science: oncology, tumour) This primary brain tumour is the most common brain tumour in children and occurs more frequently in boys than girls. These tumours can spread along the spinal cord.

symptoms include ataxia, headache, vomiting and lethargy. Treatment often involves a combination of surgery, radiation therapy and chemotherapy. Approximately 30 to 50% of children are disease-free in 10 years.