FACTS OF 201973
* SOURCE: HONG KONG CANCER REGISTRY
![](images/prostate_cancer/fact1_en.jpg)
![](images/prostate_cancer/fact1_en.jpg)
![](images/prostate_cancer/fact1_en.jpg)
![](images/prostate_cancer/fact2_en.jpg)
![](images/prostate_cancer/fact3_en.jpg)
* SOURCE: HONG KONG CANCER REGISTRY
![](images/breast_cancer/symptom-flower_v2.png)
![](images/leaves/symptoms-flower_m.png)
Signs and symptoms
The prostate is a gland of the male reproductive system. It is about the size and shape of a walnut, siting low in the pelvis, below the bladder and just in front of the rectum. The primary function of the prostate is to help make semen – the fluid that carries sperm.74
Prostate cancer tends to grow slowly compared with most other cancers.74 Early prostate cancer usually causes no symptoms; by the time symptoms appear, the cancer may already be advanced.74
Signs and symptoms of prostate cancer may include: 74
In advanced stages, prostate cancer tends to spread to the bones, so it often causes bone pain, especially in the back.74
Causes and risk factors
Researchers do not know exactly what causes prostate cancer. However, they have found several factors that might affect a man’s risk of getting prostate cancer.
Risk factors for prostate cancer may include: 75
BRCA gene mutations and prostate cancer
Inherited mutations of the BRCA1 or BRCA2 genes, which are linked to an increased risk of breast and ovarian cancers in some families, can also increase prostate cancer risk in men, especially mutations in BRCA2.75
Men who have a BRCA2 gene mutation have a higher lifetime risk of developing prostate cancer.76 Approximately 20-25% of men who have a BRCA2 mutation develop prostate cancer at some point during their lives, often over the age of 45.76
Therefore, men who have a family history of breast, ovarian or prostate cancer should talk with their doctor about whether genetic tests should be considered.
In addition, men diagnosed with prostate cancer who also have a BRCA mutation are more likely to have an aggressive form of the disease and a higher mortality rate.77 It is estimated that approximately 12% of men with advanced prostate cancer have a BRCA mutation.78
As a result, doctors may recommend that men with prostate cancer take tests to identify whether they have a BRCA mutation, which may help doctors assess the prognosis of the disease and evaluate treatment options.
- ABOUT 20-25% MEN
who inherit a BRCA2 mutation will develop prostate cancer during their lifetime, often over the age of 45 years76 - ABOUT 12% MEN
with advanced prostate cancer have a BRCA mutation.78
Diagnosis
![](./images/prostate_cancer/diagnose-flower.png)
Prostate cancer staging
Treatment options
Treatment options and recommendations depend on several factors, including the type and stage of cancer, possible side effects, and the patient’s preferences and overall health. Patients should discuss with their doctor to decide on the most appropriate treatment for them.
Active surveillance and observation (also called watchful waiting) are treatments used for prostate cancer patients who are older, do not have symptoms, or have other serious medical conditions.84
Active surveillance or observation
Active surveillance and observation (also called watchful waiting) are treatments used for prostate cancer patients who are older, do not have symptoms, or have other serious medical conditions.84
Patients in good health whose tumor is in the prostate gland only may be treated with surgery to remove the tumor.85
Types of surgery may include:
Surgery
Patients in good health whose tumor is in the prostate gland only may be treated with surgery to remove the tumor.85
Types of surgery may include:
Radiotherapy involves using radiation to kill cancer cells. The main types of radiotherapy used for prostate cancer include external beam radiotherapy and brachytherapy (internal radiotherapy).86
Radiotherapy
Radiotherapy involves using radiation to kill cancer cells. The main types of radiotherapy used for prostate cancer include external beam radiotherapy and brachytherapy (internal radiotherapy).86
Cryotherapy or cryoablation for prostate cancer involves using a very cold gas to freeze the prostate tissue and kill prostate cancer cells.87 It is done with transrectal ultrasound to guide several hollow probes through the skin between the anus and scrotum and into the prostate, and very cold gases are then passed through the needles to freeze the prostate. 87
Cryotherapy can be used when the prostate cancer has returned after radiotherapy, and might also be used to treat men with low risk early-stage prostate cancer who cannot have surgery or radiotherapy.87
Cryotherapy
Cryotherapy or cryoablation for prostate cancer involves using a very cold gas to freeze the prostate tissue and kill prostate cancer cells.87 It is done with transrectal ultrasound to guide several hollow probes through the skin between the anus and scrotum and into the prostate, and very cold gases are then passed through the needles to freeze the prostate. 87
Cryotherapy can be used when the prostate cancer has returned after radiotherapy, and might also be used to treat men with low risk early-stage prostate cancer who cannot have surgery or radiotherapy.87
Hormone therapy for prostate cancer is a treatment to stop the body from producing male sex hormones which is called androgens. 88 The most common androgen is testosterone.
Because prostate cancer cells rely on androgens to help them grow, lowering levels of these hormones can help make prostate cancers shrink or grow more slowly.88
Several types of hormone therapy can be used to treat prostate cancer:
- Prevent prostate cancer cells from making androgens
- Prevent the testicles from making androgens
- Stop the testicles from making androgens
- Block the action of androgens
- Prevent the adrenal glands from making androgens
Hormone therapy
Hormone therapy for prostate cancer is a treatment to stop the body from producing male sex hormones which is called androgens. 88 The most common androgen is testosterone.
Because prostate cancer cells rely on androgens to help them grow, lowering levels of these hormones can help make prostate cancers shrink or grow more slowly.88
Several types of hormone therapy can be used to treat prostate cancer:
- Prevent prostate cancer cells from making androgens
- Prevent the testicles from making androgens
- Stop the testicles from making androgens
- Block the action of androgens
- Prevent the adrenal glands from making androgens
Chemotherapy uses drugs to kill cancer cells or stop them from growing, dividing, and making more cells.89 It can be taken by mouth or injected into a vein or muscle. A chemotherapy regimen usually consists of a specific number of cycles given over a set period of time.
Chemotherapy may be a treatment option for treating those with advanced or castration-resistant prostate cancer and those with newly diagnosed or castration-sensitive metastatic prostate cancer.89 Castration-resistant prostate cancer is a form of prostate cancer that keeps growing even when the amount of testosterone in the body is reduced to very low levels, and castration-sensitive prostate cancer is a form of prostate cancer that responds to treatments that lower testosterone levels.
There are several standard chemotherapy drugs used for prostate cancer. Patients should discuss with their doctor to decide the most appropriate treatment for them.
Chemotherapy
Chemotherapy uses drugs to kill cancer cells or stop them from growing, dividing, and making more cells.89 It can be taken by mouth or injected into a vein or muscle. A chemotherapy regimen usually consists of a specific number of cycles given over a set period of time.
Chemotherapy may be a treatment option for treating those with advanced or castration-resistant prostate cancer and those with newly diagnosed or castration-sensitive metastatic prostate cancer.89 Castration-resistant prostate cancer is a form of prostate cancer that keeps growing even when the amount of testosterone in the body is reduced to very low levels, and castration-sensitive prostate cancer is a form of prostate cancer that responds to treatments that lower testosterone levels.
There are several standard chemotherapy drugs used for prostate cancer. Patients should discuss with their doctor to decide the most appropriate treatment for them.
Targeted therapy is a type of drug treatment that targets the cancer’s specific genes, proteins, or the tissue environment that contributes to cancer growth and survival.89
Targeted therapy blocks the growth and spread of cancer cells and limits damage to healthy cells; it may be recommended to treat metastatic castration-resistant prostate cancer.89
Some targeted therapies only work in people whose cancer cells have certain genetic mutations, such as BRCA1 and BRCA2 mutations89. To find the most effective treatment, some doctors may advise their prostate cancer patients to take tests to identify the genes, proteins, and other factors in their tumor cells. This helps doctors better match each patient with the most effective treatment whenever possible.89
Targeted therapy
Targeted therapy is a type of drug treatment that targets the cancer’s specific genes, proteins, or the tissue environment that contributes to cancer growth and survival.89
Targeted therapy blocks the growth and spread of cancer cells and limits damage to healthy cells; it may be recommended to treat metastatic castration-resistant prostate cancer.89
Some targeted therapies only work in people whose cancer cells have certain genetic mutations, such as BRCA1 and BRCA2 mutations89. To find the most effective treatment, some doctors may advise their prostate cancer patients to take tests to identify the genes, proteins, and other factors in their tumor cells. This helps doctors better match each patient with the most effective treatment whenever possible.89
Immunotherapy is a type of treatment to boost the patient’s natural defenses to fight the cancer. It uses materials made either by the body or in a laboratory to improve, target, or restore immune system function.89
Immunotherapy may be an option for some people with metastatic castration-resistant prostate cancer who have no or very few cancer symptoms and generally have not had chemotherapy.89
Immunotherapy
Immunotherapy is a type of treatment to boost the patient’s natural defenses to fight the cancer. It uses materials made either by the body or in a laboratory to improve, target, or restore immune system function.89
Immunotherapy may be an option for some people with metastatic castration-resistant prostate cancer who have no or very few cancer symptoms and generally have not had chemotherapy.89
When prostate cancer spreads, the bones are typically the first area affected.90 Bone metastasis can cause severe pain and other problems, such as fractures, spinal cord compression, or high blood calcium levels, which can be dangerous or even life threatening.90
Treatments such as hormone therapy, chemotherapy, and immunotherapy may be used to help with this; radiotherapy can also be used to control bone pain and to help relieve pressure on the spinal cord; other treatments specifically target bone metastasis and the problems it may cause can also be used to help relieve pain and high calcium levels, and to help delay or prevent fractures.90
Treatments for prostate cancer spread to bones
When prostate cancer spreads, the bones are typically the first area affected.90 Bone metastasis can cause severe pain and other problems, such as fractures, spinal cord compression, or high blood calcium levels, which can be dangerous or even life threatening.90
Treatments such as hormone therapy, chemotherapy, and immunotherapy may be used to help with this; radiotherapy can also be used to control bone pain and to help relieve pressure on the spinal cord; other treatments specifically target bone metastasis and the problems it may cause can also be used to help relieve pain and high calcium levels, and to help delay or prevent fractures.90
General recommendations may include:
- Eating well:91 Healthy food can help people with prostate cancer cope with treatment and side effects. Patients should talk with their doctor or consult with a dietitian to learn more about how to manage any special dietary needs and choose the best foods for their situation.
- Staying active:91 Physical activity can reduce tiredness, improve circulation, and lift mood. The right exercise for a prostate cancer patient depends on many factors, such as what treatment is being used, how the patient feels, and what is his general health condition. Patients should talk with their doctor to help them develop an exercise plan.
- Complementary therapies:91 Complementary therapies are designed to be used alongside conventional medical treatments. Therapies such as massage and relaxation can increase a person’s sense of control, decrease stress and anxiety, and improve mood. Patients should talk with their doctor about any therapies they are using or thinking about trying, as some may not be safe, or evidence based.
Main follow-up care may include:
- Watching for cancer recurrence:92 Sometimes prostate cancer does come back after treatment. During follow-up care, a doctor will ask specific questions about the patient’s health. Blood tests or imaging tests may sometimes be recommended as part of regular follow-up care, but testing recommendations depend on several factors, such as the type and stage of cancer first diagnosed, and the types of treatment given.
- Managing long-term and late side effects:92 Some patients may experience side effects that linger beyond the treatment period, which are called long-term side effects. Other side effects called late effects may develop months or even years afterwards. Long-term and late effects can include both physical and emotional changes. Talk with your doctor about your risk of developing late effects. Patients should talk with their doctor about their risk of developing late effects.
(Note: Hong Kong Academy of Medicine would like to remind the public, any genetic test without appropriate advice, counseling and data analysis may lead to additional medical risk and inaccurate test results, and the lack of professional interpretation and advice may also cause unnecessary anxiety or a false sense of safety.)98