Prostate cancer is a cancer that develops in the prostate gland in men and it is one of the most common types of cancer. It is usually seen in men over the age of 50. The prostate is a small walnut-shaped gland in men, which produces seminal fluid required to nourish and transport the sperm. Prostate cancer is a slow-growing cancer and, more often, it is confined to the prostate gland, requiring minimal or no treatment.
In some cases, it can take up to eight years to spread from the prostate to other parts of the body (metastasis), typically the bones. In many cases, prostate cancer does not affect the man’s natural life span.
However, certain types of prostate cancer can be aggressive and spread quickly to other parts of the body. If prostate cancer is detected early and is confined to the prostate gland, the prognosis is excellent.
What causes prostate cancer?
The exact cause of prostate cancer is not known. The tumor arises from cells with abnormal deoxyribonucleic acid (DNA) changes in the prostate. These abnormal cells rapidly grow and divide, invading surrounding structures and can spread to other parts of the body (metastasize).
There are certain factors that can increase the risk of prostate cancer. These include
- Age: The risk of prostate cancer increases with age and is most commonly seen after the age of 50.
- Race: African American men have a higher risk of prostate cancer than men of other ethnicities. Cancer in African Americans is also more likely to be aggressive.
- Family history: If a blood relative has prostate cancer, it increases the risk as well. Having a family history of genes that increase the risk of breast cancer (BRCA1 or BRCA2) or a very strong family history of breast cancer also increases the risk of developing prostate cancer.
- Obesity: Obese people have a higher risk of developing prostate cancer, which is also more likely to be aggressive and recurrent despite treatment.
What are the signs and symptoms of prostate cancer?
Prostate cancer may not cause any signs and symptoms in the early stages. Hence, it is advisable for men over 50 years of age with or without other risk factors to consult with a doctor to be screened for prostate cancer.
Prostate cancer can cause the following signs and symptoms in the later stages
How can you detect prostate cancer early?
Testing healthy men with no symptoms for prostate cancer is controversial. However, many doctors do recommend asymptomatic men over the age of 50 years old, especially those with other risk factors, to get screened for prostate cancer routinely because there are often no symptoms in the early stages. The advantage of routine screening is early detection of cancer and treatment with the possibility of complete cure.
Prostate screening tests might include the following
- Digital rectal exam (DRE): This is a part of a physical examination performed by a doctor on an outpatient basis. The doctor, with gloves on, inserts a finger into the rectum to examine the prostate to feel the texture and assess the shape and size. The prostate is situated adjacent to the rectum. The doctor uses a numbing lubricant while performing the exam to reduce discomfort.
- Prostate-specific antigen (PSA) test: This is a blood test to detect the level of PSA, a substance that is naturally produced by the prostate gland. If the PSA level is higher than normal, it indicates prostate abnormalities. PSA levels are usually also increased in cases of prostate infection or benign enlargement of the prostate. The PSA test is also done to monitor disease progress and response to treatment.
Diagnostic tests for prostate cancer
If there are abnormal findings in the screening tests, the doctor may advise the following diagnostic tests.
- Ultrasound: Trans-rectal (through the rectum) ultrasound is done using a small probe inserted into the rectum to study the prostate gland.
- Magnetic resonance imaging (MRI) scan
- Prostate biopsy: A small sample of prostate tissue is collected using a thin needle inserted into the prostate.
- Detecting the presence of metastasis
Detection of metastasis
The doctor may recommend one or more of the following tests if metastasis is suspected.
How is prostate cancer treated?
The treatment options of prostate cancer depend on the aggressiveness of the tumor, whether it is metastasized and the overall health of the patient. Treatment may involve one or a combination of multiple treatment modalities.
Treatment options include
- Observation and follow-up: Low-grade prostate cancer may not require treatment immediately. Hence, the doctor may recommend observation and regular follow-up. This may be an option for those who have a very small, slow-growing tumor confined to a small area in the prostate, which is not causing any symptoms. It may also be an appropriate strategy for those with other serious medical conditions or who are at a very advanced age, making them medically unfit for other treatment options.
- Surgery: Surgery to remove the prostate is called prostatectomy, where the entire prostate gland is removed. Radical prostatectomy may be performed, which involves removal of the prostate along with surrounding tissues and lymph nodes. Surgery may be curative in most cases (if there is no metastasis) and may be combined with other treatments.
- Radiation therapy: Radiation therapy uses high-powered energy to kill cancer cells. Radiation therapy is a good option for treating cancer confined to the prostate.
- Cryotherapy: This involves freezing prostate tissue using cold gas, which can kill the cancer cells.
- Heating the prostate tissue: High-intensity focused ultrasound (HIFU) uses concentrated heat generated by ultrasound energy, causing cell death.
- Hormone therapy: This involves taking medication to stop the production of the male hormone, testosterone, or blocking the action of testosterone. Prostate cancer cells require testosterone to grow. Therefore, cutting off the supply of testosterone can cause cancer cells to die and/or decrease their growth rate.
- Chemotherapy: Chemotherapy involves using medications to kill cancer cells. It can also help kill cancer cells that have metastasized.
- Immunotherapy: Immunotherapy modulated the body’s immune system to help fight cancer.
- Targeted drug therapy: Targeted drug treatments target specific abnormalities present within cancer cells and block the abnormalities causing cancer cells to die.
- Pain management: Large prostate cancers and metastasis can cause significant pain for which the doctor would prescribe appropriate painkillers.
- Emotional support: It is necessary to help with the emotional stress and depression that may be associated with a chronic disease.
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Early-Stage Prostate Cancer Treatment
If prostate cancer is detected early and appears to be slow-growing, invasive procedures, chemotherapy, radiation and other approaches can sometimes do more harm than good. Many prostate cancer treatments come with side effects, like incontinence or impotence, so it’s in the patient’s interest to put off invasive treatments as long as is medically safe. Active surveillance is where doctors "watch and wait" for changes that could prompt medical intervention.
How Does Prostate Cancer Kill You in the End?Prostate cancer is cancer of the prostate gland in men. Death from prostate cancer most often happens when cancer has spread (metastasized) to other organs in the body.
Prostate cancer is the most common cancer in men after skin cancer.
- Risk factors include age, family history, ethnicity, and diet.
- Prostate cancer is diagnosed by a digital rectal exam, prostate-specific antigen (PSA) test, and prostate biopsy.
- Symptoms may include
- frequent need to urinate,
- incontinence, pain,
- blood in the urine,
- fatigue, and more.
- Prognosis and treatment depend on cancer staging.
- Watchful waiting,
- cryotherapy, and
- other management strategies are available.
- Research and clinical trials strive to find new and better treatments for prostate cancer.
Prostate Cancer QuizIs prostate cancer the most common cancer in men? Take this prostate cancer quiz to find out and learn the causes, symptoms, and treatments of this disease.
Prostate Cancer Facts
Prostate cancer is a leading cause of cancer and cancer death in males; in some men, identifying it early may prevent or delay metastasis and death from prostate cancer.
- The prostate is a walnut-shaped gland that is a part of the male reproductive system that wraps around the male urethra at it exits the bladder.
- Prostate cancer is common in men over 50 years of age, with the risk of developing prostate cancer increases with aging.
Signs of Prostate Cancer: Symptoms, PSA Test, TreatmentsWhat is prostate cancer? Prostate cancer is the most common cancer in men. Learn the signs and symptoms of prostate cancer, along with causes and treatments. Know the stages, survival rates and how to lower your risk of prostate cancer.
Prostate Cancer Early Signs and Symptoms
Difficulty with urination – frequency, weak stream, trouble getting started, etc. – is usually the first sign of prostate cancer. But these and other early symptoms of prostatic cancer can also come from benign prostate conditions, so diagnostic testing is important, including PSA tests and digital rectal exam.
Prostate Cancer ScreeningProstate cancer screening may be able to detect cancer before a person has developed any symptoms. Prostate cancer is the most common nonskin cancer among American men. Tests commonly used to screen for prostate cancer include a digital rectal exam and a prostate-specific antigen test (PSA test).
Prostate Cancer Staging and Survival Rates
The prognosis for prostate cancer, as with any cancer, depends on how advanced the cancer has become, according to established stage designations. The patient's PSA score at diagnosis, as well as their Gleason score (the grading system used to determine the aggressiveness of prostate cancer) determines the prognosis and final stage designation. Prostate cancer has a high survival rate in general, but your chances depend on the stage of the cancer.
What Are the 5 Warning Signs of Prostate Cancer?Prostate cancer rarely produces symptoms in the early stage; however, few signs can help in detecting prostate cancer.
What Foods Kill Prostate Cancer?Prostate cancer refers to the uncontrolled growth of cells in the prostate gland. There is no particular food or recipe that can directly kill prostate cancer cells. Some foods that may be helpful in prostate cancer recovery and relapse prevention include foods containing lycopene, beans, green tea, cruciferous vegetables and fruit like cranberries, strawberries, blueberries and pomegranates.
What Happens If You Don't Treat Prostate Cancer?If prostate cancer is left untreated, it may grow and possibly spread out of the prostate gland to the local tissues or distant sites such as liver and lungs.