“Men's Health: What You Need to Know About Prostate Cancer?”

What is Prostate Cancer? Prostate Cancer develops in a man's prostate, the walnut-sized gland just below the bladder that produces some of the fluid in semen. It's the most common cancer in men after skin cancer. Prostate Cancer often grows very slowly and may not cause significant harm. But some types are more aggressive and can spread quickly without treatment.

Symptoms of Prostate Cancer: In the early stages, men may have no symptoms. Later, symptoms can include:

Frequent urination, especially at night

Difficulty starting or stopping urination

Weak or interrupted urinary stream

Painful or burning sensation during urination or ejaculation

Blood in urine or semen

Advanced Cancer can cause deep pain in the lower back, hips, or upper thighs.

Enlarged Prostate or Prostate Cancer? The prostate can grow larger as men age, sometimes pressing on the bladder or urethra and causing symptoms similar to prostate cancer. This is called benign prostatic hyperplasia (BPH). It's not cancer and can be treated if symptoms become bothersome. A third problem that can cause urinary symptoms is prostatitis. This inflammation or infection may also cause a fever and in many cases is treated with medication.

Risk Factors You CAN’T Control: Growing older is the greatest risk factor for prostate cancer, particularly after age 50. After 70, studies suggest that most men have some form of prostate cancer, though there may be no outward symptoms. Family history increases a man's risk: having a father or brother with prostate cancer doubles the risk. African-Americans are at high risk and have the highest rate of prostate cancer in the world.

Risk Factors You CAN Control: Diet seems to play a role in the development of prostate cancer, which is much more common in countries where meat and high-fat dairy are mainstays. The reason for this link is unclear. Dietary fat, particularly animal fat from red meat, may boost male hormone levels. And this may fuel the growth of cancerous prostate cells. A diet too low in fruits and vegetables may also play a role.

Myths about Prostate Cancer: Here are some things that will NOT cause prostate cancer: Too much sex, a vasectomy, and masturbation. If you have an enlarged prostate (BPH), that does not mean you are at greater risk of developing prostate cancer. Researchers are still studying whether alcohol use, STDs, or prostatitis play a role in the development of prostate cancer.

Can Prostate Cancer be Found Early? Screening tests are available to find prostate cancer early, but government guidelines don't call for routine testing in men at any age. The tests may find cancers that are so slow-growing that medical treatments would offer no benefit. And the treatments themselves can have serious side effects. The American Cancer Society advises men to talk with a doctor about screening tests, beginning at:

50 for average-risk men who expect to live at least 10 more years.

45 for men at high risk. This includes African-Americans and those with a father, brother, or son diagnosed before age 65.

40 for men with more than one first-degree relative diagnosed at an early age.

Screening: DRE and PSA - Your doctor may initially do a digital rectal exam (DRE) to feel for bumps or hard spots on the prostate. After a discussion with your doctor, a blood test can be used to measure prostate-specific antigen (PSA), a protein produced by prostate cells. An elevated level may indicate a higher chance that you have cancer, but you can have a high level and still be cancer-free. It is also possible to have a normal PSA and have prostate cancer.

PSA Test Results: A normal PSA level is considered to be under 4 nanograms per milliliter (ng/mL) of blood, while a PSA above 10 suggests a high risk of cancer. But there are many exceptions:

Men can have prostate cancer with a PSA less than 4.

A prostate that is inflamed (prostatitis) or enlarged (BPH) can boost PSA levels, yet further testing may show no evidence of cancer.

Some BPH drugs can lower PSA levels, despite the presence of prostate cancer, called a false negative.

If either a PSA or DRE test are abnormal, your doctor will order other tests.

Prostate Cancer Biopsy: If a physical exam or PSA test suggests a problem, your doctor may recommend a biopsy. A needle is inserted either through the rectum wall or the skin between the rectum and scrotum. Multiple small tissue samples are removed and examined under a microscope. A biopsy is the best way to detect cancer and predict whether it is slow-growing or aggressive.

Biopsy and Gleason Score: A pathologist looks for cell abnormalities and "grades" the tissue sample from 1 to 5. The sum of two Gleason grades is the Gleason score. These scores help determine the chances of the cancer spreading. They range from 2, less aggressive, to 10, a very aggressive cancer. Gleason scores help guide the type of treatment your doctor will recommend.

Prostate Cancer Imaging: Some men may need additional tests to see if the cancer has spread beyond the prostate. These can include ultrasound, a CT scan, or an MRI scan. A radionuclide bone scan traces an injection of low-level radioactive material to help detect cancer that has spread to the bone.

Prostate Cancer Staging: Staging is used to describe how far prostate cancer has spread (metastasized) and to help determine the best treatment.

Stage I: Cancer is small and still within the prostate.

Stage II: Cancer is more advanced, but still confined to the prostate.

Stage III: Cancer has spread to the outer part of the prostate and nearby seminal vesicles.

Stage IV: Cancer has spread to lymph nodes, nearby organs or tissues such as the bladder or rectum, or distant organs such as bones or lungs.

Prostate Cancer Survival Rates: The good news about prostate cancer is that it usually grows slowly. And 9 out of 10 cases are found in the early stages. Overall, the 5-year relative survival rate is 100% for men with disease confined to the prostate or nearby tissues, and many men live much longer. When the disease has spread to distant areas, that figure drops to 28%. But these numbers are based on men diagnosed at least 5 years ago. The outlook may be better for men diagnosed and treated today.

Treatment: Watchful Waiting - With low-risk cancer, one option is to watch and wait. This is determined by your biopsy, PSA test, and Gleason scores. Your doctor will order periodic testing. Other treatments -- with the risk of sexual or urinary problems -- may not be necessary. Some men who are older or have serious health conditions may not need treatment. However, more aggressive treatment is usually recommended for younger men or those with more aggressive disease.

Treatment: Radiation Therapy - External beam radiation to kill cancer cells can be used as a first treatment or after prostate cancer surgery. It can also help relieve bone pain from the spread of cancer. In brachytherapy, tiny radioactive pellets about the size of a grain of rice are inserted into the prostate. Both methods can impair erectile function. Fatigue, urinary problems, and diarrhea are other possible side effects.

Treatment: Surgery - Removing the prostate, or radical prostatectomy, is used to eliminate the cancer when it is confined to the prostate. New techniques use smaller incisions and seek to avoid damaging nearby nerves. If lymph nodes are also cancerous, prostatectomy may not be the best option. Surgery may impair urinary and sexual function, but both can improve over time.

Treatment: Hormone Therapy - Hormone therapy may shrink or slow the growth of cancer, but unless it is used with another therapy it will not eliminate the cancer. Drugs or hormones block or stop the production of testosterone and other male hormones, called androgens. Side effects can include hot flashes, growth of breast tissue, weight gain, and impotence.

Treatment: Chemotherapy - Chemotherapy kills cancer cells throughout the body, including those outside the prostate, so it is used to treat more advanced cancer and cancer that did not respond to hormone therapy.  Treatment is usually intravenous and is given in cycles lasting 3-6 months. Because the chemotherapy kills other fast-growing cells in the body, you may have hair loss and mouth sores. Other side effects include nausea, vomiting, and fatigue.

Treatment: Cryotherapy - Cryotherapy freezes and kills cancerous cells within the prostate. It is not as widely used because little is known about its long-term effectiveness. It's less invasive than surgery, with a shorter recovery time. Because the freezing damages nerves, as many as 80% of men become impotent after cryosurgery. There can be temporary pain and burning sensations in the bladder and bowel.

Treatment: Prostate Cancer Vaccine - This vaccine is designed to treat, not prevent, prostate cancer by spurring your body's immune system to attack prostate cancer cells. Immune cells are removed from your blood, activated to fight cancer, and infused back into the blood. Three cycles occur in one month. It's used for advanced prostate cancer that no longer responds to hormone therapy. Mild side effects can occur such as fatigue, nausea, and fever.

Hope for Advanced Cancer: Your doctor will continue to monitor your PSA levels and may perform other tests after treatment for prostate cancer. If it recurs or spreads to other parts of the body, additional treatment may be recommended. Lifestyle choices may matter, too. One study found that prostate cancer survivors who exercised regularly had a lower risk of dying, for example.

Coping With Erectile Dysfunction: Erectile dysfunction (ED) is a common side effect of prostate cancer treatments. Generally, erectile function improves within two years after surgery. Improvement may be better for younger men than for those over 70. You also may benefit from ED medications. Other treatments, such as injection therapy and vacuum devices, may help.

Food for Health: A cancer-conscious diet may be the best choice for survivors who want to bolster their health and those hoping to lower their risk. That means:

Five or more fruits and veggies a day

Whole grains instead of white flour or white rice

Limit high-fat meat

Limit or eliminate processed meat (hot dogs, cold cuts, bacon)

Limit alcohol to 1-2 drinks per day (if you drink)

Foods high in folate may have some action against prostate cancer (such as spinach, orange juice, lentils). Studies found mixed results on lycopene, an antioxidant found in tomatoes.

Supplements: Buyer Beware - Be wary of supplements that are marketed to prevent prostate cancer. Some herbal substances can interfere with PSA levels. A 10-year study showed an increase in the risk of cancer for men who took folic acid supplements. A 5-year study of selenium and vitamin E did not show a decreased risk of prostate cancer. Be sure to tell your doctor if you are taking vitamins or supplements.

Reviewed by David T. Derrer, MD on March 23, 2014

REFERENCES: 

American Cancer Society.
American Society of Clinical Oncology.
American Urological Association Foundation.
Dartmouth-Hitchcock Norris Cotton Cancer Center.
National Cancer Institute.
Prostate Cancer Foundation.
Prostate Cancer Research Institute.
M.D. Anderson Cancer Center.
Memorial Sloan-Kettering Cancer Center.
National Library of Medicine.
National Prostate Cancer Coalition.
Rush University Medical Center.
University of Pennsylvania Medical Center.

ZeroCancer.Org

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