VOA标准英语2011--New Breast Cancer Treatment Shows Great Promise

New Breast Cancer Treatment Shows Great Promise

 

There's some promising¹ news about breast cancer treatment. In clinical trials at Johns Hopkins Cancer Center in Baltimore, Maryland, doctors report they successfully pumped cancer-fighting medicine directly into a breast tumor². Early results show the treatment not only kills the tumor, but spares the patients disfiguring surgery and the side effects of more radical³ treatments.

The earliest stages of breast cancer are usually discovered during a mammogram. Right now, the standard treatment when tumors are found is surgery, followed by radiation therapy and then hormone⁴ treatment. Some women who have a high risk of getting breast cancer even opt⁵ to have mastectomies - the surgical⁶ removal of one or both breasts - just to reduce their risk.

At Johns Hopkins Cancer Center in Baltimore, one oncologist has been studying a less radical approach.

"Since most cancers originate within the breasts and the cells that line the milk ducts within the breasts, can we possibly eliminate those dangerous cells, and by doing so, eliminate breast cancer?" asks Dr. Vared Sterns.

The idea is simple. Give a small concentration of a chemotherapy drug directly through the patient's nipple and into the milk ducts where cancer cells or even pre-cancerous cells are forming. The entire procedure takes about 30 minutes. In clinical trials, researchers found this technique was more effective and less toxic⁷ than the conventional practice of administering chemotherapy through the vein⁸.

In clinical trials at Johns Hopkins Cancer Center in Baltimore, Maryland, doctors report they successfully pumped cancer-fighting medicine directly into a breast tumor.

"What we found was that the concentration of the drug within the breast was very, very high, while the concentration of the drug within the blood system was very low," said Sterns.

With conventional chemotherapy, the opposite was true: Drugs administered through the vein concentrated in the blood system and but were less concentrated where they were most needed - in the breast. The clinical trials have been so promising that this type of treatment might eventually become the standard for patients with very early stages of breast cancer or those who are at risk of developing it.

"It is my hope that the treatment can be delivered in just your usual mammogram suite⁹. This has been done in our study quite easily on an outpatient basis. It doesn't take very long. It's not painful," said Sterns.

She likens this procedure to a colonoscopy. If there's a polyp, the doctor removes it before it can become cancerous.

Dr. Sterns said researchers need to find out how much of the drug is needed and how often it should be administered to rid the breast of cancer. She estimates that work will take another 10 years. Then, if this procedure is as promising as it seems, it may become standard treatment for patients with early stage breast cancer.

1 promising   

adj.有希望的，有前途的

参考例句：

• The results of the experiments are very promising.实验的结果充满了希望。
• We're trying to bring along one or two promising young swimmers.我们正设法培养出一两名有前途的年轻游泳选手。

2 tumor   

n.（肿）瘤，肿块(英)tumour

参考例句：

• He was died of a malignant tumor.他死于恶性肿瘤。
• The surgeons irradiated the tumor.外科医生用X射线照射那个肿瘤。

3 radical   

n.激进份子，原子团，根号；adj.根本的，激进的，彻底的

参考例句：

• The patient got a radical cure in the hospital.病人在医院得到了根治。
• She is radical in her demands.她的要求十分偏激。

4 hormone   

n.荷尔蒙，激素，内分泌

参考例句：

• Hormone implants are used as growth boosters.激素植入物被用作生长辅助剂。
• This hormone interacts closely with other hormones in the body.这种荷尔蒙与体內其他荷尔蒙紧密地相互作用。

5 opt   

vi.选择，决定做某事

参考例句：

• They opt for more holiday instead of more pay.他们选择了延长假期而不是增加工资。
• Will individual schools be given the right to opt out of the local school authority?各个学校可能有权选择退出地方教育局吗？

6 surgical   

adj.外科的，外科医生的，手术上的

参考例句：

• He performs the surgical operations at the Red Cross Hospital.他在红十字会医院做外科手术。
• All surgical instruments must be sterilised before use.所有的外科手术器械在使用之前，必须消毒。

7 toxic   

adj.有毒的，因中毒引起的

参考例句：

• The factory had accidentally released a quantity of toxic waste into the sea.这家工厂意外泄漏大量有毒废物到海中。
• There is a risk that toxic chemicals might be blasted into the atmosphere.爆炸后有毒化学物质可能会进入大气层。

8 vein   

n.血管，静脉；叶脉，纹理；情绪；vt.使成脉络

参考例句：

• The girl is not in the vein for singing today.那女孩今天没有心情唱歌。
• The doctor injects glucose into the patient's vein.医生把葡萄糖注射入病人的静脉。

9 suite   

n.一套(家具)；套房；随从人员

参考例句：

• She has a suite of rooms in the hotel.她在那家旅馆有一套房间。
• That is a nice suite of furniture.那套家具很不错。