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Gliomas are the most common primary tumours of the central nervous system , with nearly 15 , 000 diagnosed annually in the United States and a lethality approaching 80 % within the first year of glioblastoma diagnosis .
 Gliomas, primary tumours, central nervous system, glioblastoma
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Gliomas, primary tumours, central nervous system, glioblastoma