Featured Research

from universities, journals, and other organizations

Most men with low-risk prostate cancer receive aggressive treatment

Date:
July 26, 2010
Source:
JAMA and Archives Journals
Summary:
Most men who are diagnosed with prostate cancer appear to under undergo aggressive therapy, even if they have a low prostate-specific antigen (PSA) level and low-risk disease, according to a new study.

Most men who are diagnosed with prostate cancer appear to under undergo aggressive therapy, even if they have a low prostate-specific antigen (PSA) level and low-risk disease, according to a report in the July 26 issue of Archives of Internal Medicine, one of the JAMA/Archives journals.

More than 90 percent of all prostate cancers are diagnosed before the disease has spread to other parts of the body, and the five-year survival rate for these patients diagnosed with localized disease is almost 100 percent, according to background information in the article. The five-year survival rate from all stages of disease increased from 69 percent in 1975 to almost 99 percent in 2003. "The tremendous improvement in survival has been attributed to early detection and treatment," the authors write. "However, there have been concerns about the potential overdiagnosis and overtreatment of localized prostate cancer. Despite these concerns, some researchers argue that the prostate-specific antigen (PSA) level is associated with a continuum of cancer risk and recommend lowering the 4-nanogram per milliliter threshold for biopsy."

To determine current risk profiles and treatment patterns of men with prostate cancer and PSA levels below this threshold, Yu-Hsuan Shao, Ph.D., of the Cancer Institute of New Jersey, New Brunswick, and colleagues used data from the Surveillance, Epidemiology and End Results system. Of 123,934 men with newly diagnosed prostate cancer from 2004 to 2006, 14 percent had PSA levels of 4 nanograms per milliliter or lower. "The patients in these cases were less likely to have high-grade cancer, and more than half were classified as having low-risk cancer," the authors write.

"Despite their lower risk of having clinically significant disease, treatment rates for men with PSA values of 4.0 nanograms per milliliter or lower were comparable to those of men presenting with PSA values between 4.0 and 20.0 nanograms per milliliter." More than 70 percent of men with PSA values lower than 20 nanograms per milliliter had their prostates removed via radical prostatectomy or had radiation therapy. "Radical prostatectomy was performed on 44 percent of men with PSA values of 4.0 nanograms per milliliter or lower, 38 percent of men with PSA values between 4.1 and 10.0 nanograms per milliliter and 24 percent of men with PSA values between 10.1 and 20 nanograms per milliliter. Radiation therapy was performed on 33 percent of men with PSA values of 4.0 nanograms per milliliter or lower, 40 percent of men with PSA values between 4.1 and 10.0 nanograms per milliliter and 41.3 percent of men with PSA values between 10.1 and 20 nanograms per milliliter," the authors write.

The authors suggest that if the threshold PSA value for biopsy were decreased from 4.0 to 2.5 nanograms per milliliter, the number of men with abnormal PSA levels would double to approximately 6 million. "Estimates suggest that 32 percent of men with abnormal PSA levels would be diagnosed as having prostate cancer from their needle biopsy," they write. "Based on the results in the present study, 82.5 percent of these 1.9 million men would receive attempted curative treatments, while only 2.4 percent would have high-grade cancer. However, no evidence suggests that delaying biopsy until the PSA level reaches 4.0 nanograms per milliliter would result in an excessive number of potentially non-curable disease cases."

"These results underscore the fact that PSA level, the current biomarker, is not a sufficient basis for treatment decisions," the authors conclude. "Without the ability to distinguish indolent from aggressive cancers, lowering the biopsy threshold might increase the risk of overdiagnosis and overtreatment."


Story Source:

The above story is based on materials provided by JAMA and Archives Journals. Note: Materials may be edited for content and length.


Journal Reference:

  1. Yu-Hsuan Shao; Peter C. Albertsen; Calpurnyia B. Roberts; Yong Lin; Amit R. Mehta; Mark N. Stein; Robert S. DiPaola; Grace L. Lu-Yao. Risk Profiles and Treatment Patterns Among Men Diagnosed as Having Prostate Cancer and a Prostate-Specific Antigen Level Below 4.0 ng/mL. Arch Intern Med, 2010; 170 (14): 1256-1261 [link]

Cite This Page:

JAMA and Archives Journals. "Most men with low-risk prostate cancer receive aggressive treatment." ScienceDaily. ScienceDaily, 26 July 2010. <www.sciencedaily.com/releases/2010/07/100726162113.htm>.
JAMA and Archives Journals. (2010, July 26). Most men with low-risk prostate cancer receive aggressive treatment. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2010/07/100726162113.htm
JAMA and Archives Journals. "Most men with low-risk prostate cancer receive aggressive treatment." ScienceDaily. www.sciencedaily.com/releases/2010/07/100726162113.htm (accessed July 25, 2014).

Share This




More Health & Medicine News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Painkiller Designed To Discourage Abuse: Will It Work?

New Painkiller Designed To Discourage Abuse: Will It Work?

Newsy (July 24, 2014) The FDA approved Targiniq ER on Wednesday, a painkiller designed to keep users from abusing it. Like any new medication, however, it has doubters. Video provided by Newsy
Powered by NewsLook.com
Doctor At Forefront Of Fighting Ebola Outbreak Gets Ebola

Doctor At Forefront Of Fighting Ebola Outbreak Gets Ebola

Newsy (July 24, 2014) Sheik Umar Khan has treated many of the people infected in the Ebola outbreak, and now he's become one of them. Video provided by Newsy
Powered by NewsLook.com
Condemned Man's US Execution Takes Nearly Two Hours

Condemned Man's US Execution Takes Nearly Two Hours

AFP (July 24, 2014) America's death penalty debate raged Thursday after it took nearly two hours for Arizona to execute a prisoner who lost a Supreme Court battle challenging the experimental lethal drug cocktail. Duration: 00:55 Video provided by AFP
Powered by NewsLook.com
Can Watching TV Make You Feel Like A Failure?

Can Watching TV Make You Feel Like A Failure?

Newsy (July 24, 2014) A study by German researchers claims watching TV while you're stressed out can make you feel guilty and like a failure. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile: iPhone Android Web
          Follow: Facebook Twitter Google+
          Subscribe: RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins