Study shows seed implants a suitable prostate cancer treatment option for men of all ages

August 3, 2009

Men diagnosed with prostate cancer have a number of treatments to choose from, but it's a daunting task to figure out the right mix of therapies for an individual patient. Trends among medical professionals have tipped the scales in favor of some treatments for younger men diagnosed with prostate cancer, but a new study by scientists at The Feinstein Institute for Medical Research and North Shore-LIJ Health System have found that age doesn't make a difference in the long-term therapeutic outcome.

Louis Potters, MD, chairman of radiation medicine at North Shore University Hospital and LIJ Medical Center, and his colleagues identified 2,119 consecutive prostate cancer patients treated between 1992 and 2005, and narrowed their selection to men under 60 years old. Their treatment regimens consisted of permanent prostate brachytherapy with or without hormone therapy, permanent prostate brachytherapy with external beam radiation, or a combination of those therapies. The 237 patients had been followed for an average of 56 months after treatment. They wanted to see whether there was a difference in the rate of progression among the treatments and if it had anything to do with the age of the patient or disease-related risk factors.

Age didn't seem to factor into the treatment equation, said Dr. Potters. Findings of the study were published in The . "There is a whole politic to prostate cancer treatments," added Dr. Potters. "But the bottom line is that brachytherapy is an appropriate option for men at any age."

Prostate brachytherapy, or "seed implants" is the use of radiation implanted in the body itself. The idea dates back to 1913 when surgeons inserted a radium capsule into the prostatic urethra, the canal that runs from the bladder to the prostate. Implanting radioactive material locally to stop the growth of was more art than science until the 1980's, when the development of transrectal ultrasound allowed surgeons to have a clearer view of the target tissue. It is critical that the implant delivers an effective dose to the prostate while avoiding surrounding organs.

The targeted use of radiation continues to be a common treatment option for men with clinically localized prostate cancer. The goal of any treatment is to stop the disease from progressing.

Dr. Potters said that the urological community generally refers younger patients for radical prostatectomy -- the surgical removal of the prostate -- over radiation or no therapy at all. Better screening and detection methods are discovering prostate cancer earlier in men. Knowing the long-term outcomes for each of the available treatments across the mid-to-late lifespan is vital. "It is even more important to understand treatment options and associated outcomes for younger patients diagnosed with prostate cancer," Dr. Potters and his colleagues wrote in the paper.

In a study of 2,119 patients in different clinical stages of the disease, scientists looked at the five and 10-year so-called "freedom from progression" (FFP). About 11 percent of those patients were under age 60. At five years, 90 percent of those who underwent the seed implant were treated successfully; and at 10 years, 86 percent had successful outcomes. Those rates did not change when the population was stratified into two groups - under 60 years old and over.

"It appears that a prostate implant, when performed well, is an effective treatment option for younger patients," Dr. Potters said. "Therefore, patient age should not bias one's options."

Each year, about 230,000 men are diagnosed with prostate cancer, one of the most common cancers in men over age 50. Treatment for localized disease remains controversial. About 20 percent of tumors never grow larger, even without treatment. Scientists are trying to figure out who these low-risk patients are and keep a watchful eye on them. There is intriguing evidence from autopsy studies that one in three men had prostate cancer that was not diagnosed when they were alive.

Is surgery best for younger patients? Is prostate brachytherapy as effective as surgery in reducing the risk of disease progression and death over a five-to-10-year period? And what are the benefits of seed implantation versus directing radiation beams at the tumor?

"There is no gold standard for outcomes in younger with ," said Dr. Potters. According to the new findings, he said, "Outcomes are impacted by disease-related risk factors but not by age."

He added that the advantage to brachytherapy is that the risk for incontinence is small, and impotence is not nearly as common as it is following prostate surgery.

Scientists at The Feinstein Institute are now studying the effect of the radiation dose on long-term outcome.

Source: North Shore-Long Island Jewish (LIJ) Health System

Explore further: Facts About Prostate Cancer and Its Treatment

Related Stories

Facts About Prostate Cancer and Its Treatment

October 25, 2006

In 2006, about 235,000 Americans will be diagnosed with prostate cancer, making it the most common cancer among males. If caught early, prostate cancer is very treatable and usually curable.

Radiation therapy combo cures prostate cancer long-term

January 4, 2007

Seventy-four percent of men treated with a combination of radiation seed implants and external beam radiation therapy for prostate cancer are cured of their disease 15 years following their treatment, according to a study ...

Radiation seeds effectively cure prostate cancer in young men

October 29, 2007

Radiation seed implants (brachytherapy) are just as effective at curing prostate cancer in younger men (aged 60 and younger) as they are in older men, according to a study presented at a scientific session on October 31, ...

Recommended for you

Machine Translates Thoughts into Speech in Real Time

December 21, 2009

(PhysOrg.com) -- By implanting an electrode into the brain of a person with locked-in syndrome, scientists have demonstrated how to wirelessly transmit neural signals to a speech synthesizer. The "thought-to-speech" process ...

Quantum Theory May Explain Wishful Thinking

April 14, 2009

(PhysOrg.com) -- Humans don’t always make the most rational decisions. As studies have shown, even when logic and reasoning point in one direction, sometimes we chose the opposite route, motivated by personal bias or simply ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.