What
is prostate cancer screening?Prostate cancer screening is a way in which doctors check the
prostate gland for signs of cancer. The prostate gland is part of the male
anatomy. It sits below the bladder and in front of the rectum. It forms a ring
around the urethra, the tube that carries urine out of the body.
The main
test used to screen for prostate cancer is a blood test called a "PSA
test."
Who
should be screened for prostate cancer?Prostate cancer screening is done in
people who have no symptoms of the disease. It is not clear whether getting
screened for prostate cancer can extend life or prevent symptoms or problems.
For this reason, doctors do not know who – if anyone – should be screened for
prostate cancer.
Most
experts recommend working with your doctor to decide whether screening is right
for you. In most cases, this discussion should start around the age of 50. If
you have any risk factors for prostate cancer, you might want to begin
screening at age 40 to 45. Your risk is higher if you are Black, have a father
or brother with prostate cancer, or have certain genetic mutations such as
"BRCA1" or "BRCA2."
Most
doctors recommend against screening if you are age 70 or older, or have serious
health problems.
Why
do doctors offer screening?Doctors offer screening in the hopes of catching prostate cancer
early – before it has a chance to grow, spread, or cause symptoms. With many
cancers, catching the disease early is an important part of effective
treatment. But prostate cancer is not like many other cancers. It usually grows
slowly and does not usually lead to death. The problem is that a small number
of prostate cancers are serious
and can lead to death. Doctors do not have an ideal way to tell which prostate cancers
are deadly and which ones would never cause any problems.
Certain
tests can suggest which prostate cancers might be more likely to cause
problems. But the tests are far from perfect. Also, different studies have come
to different conclusions about the benefits of screening and whether or not it
lowers the risk of dying from prostate cancer.
What
are the drawbacks to getting screened?PSA tests have 2 main drawbacks:
●PSA tests sometimes give "false positives." This means
they suggest cancer when there is actually no cancer. This can lead to unneeded
worry and to further tests. One of these tests, a biopsy, can be briefly
painful.
●When PSA tests lead to the discovery of cancer, there is very
often no way to tell whether the cancer is one that could do harm. That means
you could get treated for cancer that would never have done you any harm.
That's a problem because treatment for prostate cancer has risks and often
causes problems of its own. For instance, prostate cancer treatment can cause
you to leak urine and to have problems with sex.
How
do I decide if I should be screened?Work with your doctor or nurse to decide
if screening is right for you. This will involve thinking about how likely it
is that you will get prostate cancer. If you have a high risk of prostate
cancer, screening might be a good idea.
You will
also need to think about how you feel about the possible benefits and harms of
being screened. Ask yourself:
●Do I want to know if I have prostate cancer, even if the cancer
might never do me any harm?
●Would I be treated if I learned that I had prostate cancer?
●How do I feel about the risks of being treated for prostate
cancer?
●How do I feel about the risks of getting a deadly or aggressive
form of prostate cancer?
●Would I be willing to accept a high risk of side effects from
treatment in return for a small chance of living longer?
What
is a PSA test?PSA stands for "prostate-specific antigen." PSA is a
protein made by the prostate. Levels of this protein usually go up when a
person has prostate cancer. The protein also goes up for reasons that do not involve
cancer. For example, PSA levels rise if you:
●Have a condition called benign prostatic hyperplasia (BPH),
sometimes called an enlarged prostate
●Have a prostate infection, also called prostatitis
●Hurt your prostate, for example while riding a bike
●Ejaculate (have an orgasm)
What
if my PSA level is too high?If your PSA level is high, try not to panic. It's possible your
PSA is high for reasons unrelated to cancer. If your PSA level is only somewhat
high, often the next step is to have the PSA test again. For 2 days before the
second test, avoid ejaculating and bike-riding. If your doctor thinks you have
a prostate infection, you might also need to take antibiotics for a while
before you repeat the test.
If your PSA
is still high on the second test, or if it was very high the first time, you
will probably need more testing. This might include a biopsy or other test. A
biopsy means that a doctor will insert a needle into your prostate to take tiny
samples of tissue. Those samples will then go to the lab to be checked for
cancer.
If it turns
out you do have cancer, remember that prostate cancer is not usually deadly. It
usually grows slowly, so you probably have time to decide what to do. There are
treatments that can sometimes cure prostate cancer. You might also choose to
hold off on treatment and wait to see if your cancer shows signs of
progressing.
How
often should I be screened for prostate cancer?If you do decide to be
screened, experts recommend repeating screening every 2 years.
Doctors
recommend stopping screening when you turn 70 or if you develop serious health
problems. In these cases, the benefits of screening are not worth the possible
harms.