<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
          您現在的位置: Language Tips> Audio & Video> Special Speed News  
             
           





           
          Brain cancer like Kennedy's is difficult to treat
          [ 2008-05-28 09:46 ]

           

          Download

          This is the VOA Special English Health Report.

          Last week doctors in Massachusetts announced that Senator Ted Kennedy has brain cancer.

          The news came after he suffered a seizure. Doctors found a glioma, a growth in the supportive tissue of the brain. The glial tissue is where the largest percentage of brain tumors begin.

          More than forty percent of growths in the brain are gliomas. But they make up almost eighty percent of cancerous growths, like the malignant glioma that Senator Kennedy has. Seizures and headaches are common first signs of a glioma.

          Cancerous glial tumors generally spread in the brain the way roots spread from a plant. That makes removing the tumor more difficult. A clear border between the cancer and healthy tissue can be difficult to find.

          The location of the glioma must also be considered when deciding treatment. Senator Kennedy’s tumor is in the left parietal lobe of the brain. This area is involved in some sensory understanding and spatial recognition, as well as language, reading and vision.

          Removal of a glioma from this area can result in speech problems and other disabilities.

          Some cancer experts believe that doctors are unlikely to operate on Senator Kennedy. They say the likely treatment is radiation and chemotherapy.

          But chemical treatment for brain cancer is complex because of the protective blood-brain barrier. It stops some chemicals from entering the brain, including many chemo drugs.

          Radiation treatments for brain cancer have improved a lot in recent years. New methods and equipment can permit extremely localized treatments that are less likely to damage healthy tissue.

          Research into brain cancer treatment also includes drug therapy. In two thousand five, a drug called temozolomide was shown to add a few months to the lives of brain cancer patients.

          And researchers are studying uses for the cancer drug Avastin. It is already used to treat breast, colon and lung cancer. It starves tumors by blocking blood flow to the growths.

          The United States has about ten thousand new cancerous gliomas a year. Half of the people die within fifteen months. Malignant gliomas are more aggressive in older people.

          Ted Kennedy is seventy-six years old. The senator competed Monday in the second half of a boat race in Massachusetts, finishing second in his five-boat division.

          And that’s the VOA Special English Health report, written by Caty Weaver. Transcripts and MP3s of our reports are at voaspecialenglish.com. I’m Bob Doughty.

          glioma:神經膠質瘤(腦神經或脊神經束上產生的腫瘤)

          (Source: VOA 英語點津姍姍編輯)

           
          英語點津版權說明:凡注明來源為“英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
          相關文章 Related Story
           
           
           
          本頻道最新推薦
           
          Walking in the US first lady's shoes
          “準確無誤”如何表達
          英國新晉超女蘇珊大媽改頭換面
          豬流感 swine flu
          你有lottery mentality嗎
          翻吧推薦
           
          論壇熱貼
           
          別亂扔垃圾。怎么譯這個亂字呀?
          橘子,橙子用英文怎么區分?
          看Gossip Girl學英語
          端午節怎么翻譯?
          母親,您在天堂還好嗎?

           

          主站蜘蛛池模板: 亚洲女人的天堂在线观看| 中文字幕av一区二区| 亚洲精品97久久中文字幕无码| 成人免费av色资源日日| 青草成人精品视频在线看| 亚洲人成网站77777在线观看 | 国产精品人成视频免费播放| 偷窥盗摄国产在线视频| 蜜臀av入口一区二区三区| 久久国产精品成人影院| 国产精品久久毛片| 亚洲综合精品一区二区三区| a级毛片在线免费观看| 内射极品少妇xxxxxhd| 国产精品伊人久久综合网| 成年女人片免费视频播放A| 亚洲αⅴ无码乱码在线观看性色| 日韩免费视频一一二区| 一区二区三区四区精品视频| 国产最新AV在线播放不卡| 综合伊人久久在| 亚洲日韩国产精品第一页一区| 亚洲成a人片在线观看中 | 无码成人午夜在线观看| 日韩在线视频线观看一区| 日本道播放一区二区三区| 亚洲人成网站18禁止大app| 久久久久国产一级毛片高清板| 亚洲av无码专区在线亚| 宫西光有码视频中文字幕| 毛片大全真人在线| 日本中文字幕久久网站| 国产福利在线观看永久视频| 久久久久无码精品国产app| 国产jlzzjlzz视频免费看| 国产精品一区二区黄色片| 老司机午夜福利视频| 一级内射片在线网站观看视频| 男人av无码天堂| 久久精品国产亚洲av麻豆四虎| 国产高清精品自拍av|