英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

HEALTH REPORT - PSA Levels and Prostate Cancer

时间:2006-03-01 16:00来源:互联网 提供网友:SZPJX   字体: [ ]
    (单词翻译:双击或拖选)

HEALTH REPORT - PSA Levels and Prostate Cancer
By Jerilyn Watson

Broadcast: Wednesday, June 09, 2004

This is the VOA Special English Health Report.

Many older men are tested each year for cancer of the prostate gland1. This organ is part of the male reproductive system. One test measures levels in the blood of a protein known as P.S.A. P.S.A. is prostate-specific antigen. Most men with prostate cancer have increased levels of this protein.

The test results come back from the laboratory as a number. Doctors usually consider the results normal if the P.S.A. level is below four. But a new study raises questions. The study found prostate cancer in fifteen percent of older men with P.S.A. levels below four. But the researchers also found that most of these cancers were not especially dangerous. The risk of prostate cancer increased as the P.S.A. levels got higher.

A result above ten is considered high. But a high P.S.A. level does not always mean that a man has cancer. There could be an infection or an enlarged prostate. This is a common problem in older men.

The study involved almost three-thousand men. They were ages sixty-two to ninety-one. Ian Thompson of the Texas Health Science Center at San Antonio led the study. The results appeared in the New England Journal of Medicine.

Doctors often perform biopsies on men with increased P.S.A. levels. They cut a small amount of tissue from the prostate to look for cancer. If cancer is found, then the question arises of what to do next.

Doctors must decide how aggressive the cancer is. Non-aggressive prostate cancers usually grow slowly. They do not normally spread to other organs.

Researchers say almost thirty percent of men in their thirties and forties have prostate cancer but do not know it. By their sixties and seventies, however, two out of three men may have prostate cancer.

Some doctors advise men with non-aggressive prostate cancer to delay treatment. But, in the United States, almost thirty-thousand men per year die of prostate cancer. So most patients elect to have treatment. This often means an operation to remove the prostate.

Last December, Secretary of State Colin Powell had an operation in which doctors removed his prostate because of cancer. Senator2 John Kerry, the Democratic presidential candidate, had the same experience early last year.

This VOA Special English Health Report was written by Jerilyn Watson.


点击收听单词发音收听单词发音  

1 gland qeGzu     
n.腺体,(机)密封压盖,填料盖
参考例句:
  • This is a snake's poison gland.这就是蛇的毒腺。
  • Her mother has an underactive adrenal gland.她的母亲肾上腺机能不全。
2 senator UzJwm     
n.参议员,评议员
参考例句:
  • The senator urged against the adoption of the measure.那参议员极力反对采取这项措施。
  • The senator's speech hit at government spending.参议员的讲话批评了政府的开支。
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
TAG标签:   健康与经济  health  prostate  health  prostate
顶一下
(0)
0%
踩一下
(0)
0%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴