官方APP下载:英语全能特训(微信小程序版,支持苹果手机、安卓手机)
创办于2003年
UNSV记不住?那就记中文谐音“忧安思危”吧!
  Slow and Steady Wins the Race!
UNSV英语学习频道 - Slow and steady wins the race!
公众微信服务号
英语全能特训(微信公众服务号)
UNSV英语学习频道淘宝网店
客服短信:18913948480
客服邮箱:web@unsv.com
初级VIP会员
全站英语学习资料下载。
¥98元/12个月

HEALTH REPORT - PSA Levels and Prostate Cancer

阅读次数:


VIP会员专享下载:(非VIP会员无权下载!如果想下载,但还不是VIP会员,请点此订购
下载方式:使用鼠标右键(注意是鼠标右键!)点击下面的MP3音频/MP4视频链接,然后选择“另存为…”。
PDF节目文稿 PDF节目文稿  MP3节目录音 MP3节目录音 
文章正文
同步字幕

This is the VOA Special English Health Report.

Many older men are tested each year for cancer of the prostate gland. 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. Senator John Kerry, the Democratic presidential candidate, had the same experience early last year.

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

网友的学习评论(0条):
版权所有©2003-2019 南京通享科技有限公司,保留所有权利。未经书面许可,严禁转载本站内容,违者追究法律责任。 互联网经营ICP证:苏B2-20120186
网站备案:苏ICP备05000269号-1中国工业和信息化部网站备案查询
广播台