Ladies Fighting Breast Cancer Logo

Breast Cancer in Men

Breast cancer is often thought of as a condition that only affects women, but men can also develop it.

Breast cancer in men is much less common than breast cancer in women, affecting just one in every 100,000 men in the UK.

The cancer develops in the small amount of breast tissue men have behind their nipples. The most common symptom is a hard, painless lump in one of the breasts.

However, it is important to note that the vast majority of breast lumps are due to a condition called gynaecomastia. This is a common, non-cancerous condition where male breast tissue becomes enlarged.


Symptoms of Breast Cancer

The main symptom of breast cancer in men is a hard lump in one of your breasts. The lump is almost always painless.

The lump is usually located underneath the nipple and areola (the circle of dark coloured skin that surrounds the nipple).

However, it is important to note that the vast majority of breast lumps are due to a condition called gynaecomastia. This is a common, non-cancerous condition where male breast tissue becomes enlarged.

Less common symptoms of male breast cancer usually affect the nipple. These can include:

  • the nipple begins to turn in on itself (nipple retraction)
  • the nipple becomes hard, inflamed, and looks sore (nipple ulceration)
  • fluid leaking from the nipple (nipple discharge)

Advanced symptoms

Additional symptoms usually only develop if the cancer spreads from your breast to other parts of the body, such as your bones, liver or lungs. This is known as metastatic breast cancer.

Symptoms of metastatic breast cancer include:

  • bone pain
  • swelling of the lymph nodes (glands), usually in or around the armpit
  • shortness of breath
  • feeling unusually tired all the time
  • feeling sick (nausea)
  • itchy skin with jaundice (yellowing of the skin and whites of the eyes)

When to seek medical advice

You should always visit your GP if you notice a lump in your breast or if you have problems affecting your nipples, such as retraction, ulceration or discharge.

These problems are unlikely to be of the result of breast cancer, but they should be investigated further.


Causes of breast cancer in men

It’s not clear exactly what causes breast cancer in men, although several things that can increase your risk of developing the condition have been identified.

About cancer

The body is made up of millions of different cells. Cancer happens when cells multiply in an abnormal way. When cancer affects organs and solid tissues, it causes a growth called a tumour to form. Cancer can occur in any part of the body where cells multiply abnormally.

In breast cancer, cells in the breast tissue are affected.

Left untreated, cancer can quickly grow and spread from the breast into nearby tissue or other parts of the body. This usually happens through the lymphatic system, but can also spread through the bloodstream.

The lymphatic system is a series of glands located throughout the body and linked together in a similar way to the blood circulation system.

Once the cancer reaches your lymphatic system, it can spread to any other part of your body, including your bones, blood and organs.

Increased risk

A number of things that can increase your risk of breast cancer developing have been identified.

Age

Like many cancers, men have an increased risk of developing breast cancer as they get older. Most cases are diagnosed in men aged 60-70. It’s rare for young men to develop the condition.

Genetics and family history

A genetic mutation is where instructions carried in all living cells become scrambled in some way which means one or more of the body’s processes do not work in the way they should.

There are a number of genetic mutations known to increase your risk of developing breast cancer. The most significant mutation identified is known as the BRAC2 mutation. One study carried out in the UK found 1 in 20 men with breast cancer have the BRAC2 mutation.

There is also evidence that breast cancer can run in families, as 1 in 5 men who develop breast cancer have a first-degree relative, such as a mother or sister, who has developed breast cancer.

Routine testing for the faulty genes that cause breast cancer in men is not usually carried out on the NHS. However, some private clinics offer gene testing. Tests can be expensive with prices ranging from around £2,000 to £3,000.

Oestrogen

There is evidence that high levels of the hormone oestrogen, or prolonged exposure to it, can increase the risks of breast cancer in men.

Compared to women, men tend to have low levels of oestrogen, but there are circumstances that can increase the levels of oestrogen in men. These include:

  • hormone treatments – man-made (synthetic) versions of oestrogen are often used to treat prostate cancer and are also given to transsexuals undergoing a male to female sex change
  • obesity – obese men have higher levels of oestrogen than normal
  • cirrhosis - long-term scarring of the liver often caused by long-term alcohol misuse

There is also a rare genetic condition affecting males called Klinefelter’s syndrome. This is a congenital condition (boys are born with it) and it means affected males produce less of the hormone testosterone than usual.

As testosterone usually helps to limit the effect of oestrogen, men with Klinefelter’s syndrome are more likely to develop breast cancer than the general male population.

Occupational risks

There is evidence that men who work in hot environments are twice as likely to develop breast cancer compared with men who work in cooler environments. Environments linked to an increased risk of breast cancer in men include:

  • blast furnaces
  • steel works
  • rolling mills – a factory where metal (usually steel) is shaped using rollers
  • car manufacturing plants

One hypothesis to help explain the link between working environment and the increased risk of developing breast cancer is that excessive heat may damage the testicles, which could lead to an increase in oestrogen levels.

Another hypothesis is that working in hot environments usually involves exposure to certain chemicals which may increase the risk of developing breast cancer in men.

Rates of breast cancer are also unusually high in men who manufacture perfumes and soaps.
They are seven times more likely to develop breast cancer than the male population at large. The reason for this increased risk is still unclear. Exposure to certain chemicals seems to be an obvious possibility, but this has not yet been proven.

Radiation

Exposure to radiation has been linked to an increased risk of developing breast cancer in men.

Research has found that men who received a course of radiotherapy (where high energy X-rays are used to kill cancerous cells) directed at the upper chest were seven times more likely to develop male breast cancer compared to the population at large.

However, even a seven-fold increase means the chance of developing breast cancer is still very low.


Treating Breast Cancer in Men

Treatment for breast cancer in men largely depends on how far the cancer has spread.

Most hospitals use multidisciplinary teams (MDTs) to treat men with breast cancer. These are teams of specialists who work together to make decisions about the best way to proceed with your treatment.

Deciding which treatment is best for you can often be confusing. Your cancer team will recommend what they think is the ideal treatment option but the final decision will be yours.

Before visiting hospital to discuss your treatment options, you may find it useful to write a list of questions you would like to ask the specialist. For example, you may want to find out the advantages and disadvantages of particular treatments.

Your treatment plan

Your recommended treatment plan will depend on how far the cancer has spread. If the cancer has not spread significantly beyond your breast, a complete cure may be possible.

In these cases, surgery to remove the affected breast is usually recommended. This is often followed by radiotherapy, hormone therapy and/or chemotherapy to help prevent the cancer returning.

If the cancer has spread beyond your breast into other parts of your body, such as your lungs, a complete cure will not be possible. However, hormone therapy and chemotherapy can be used to relieve symptoms and slow down the spread of the cancer.

More information about these treatments can be found below.

Surgery

Surgery is usually recommended as the first treatment for breast cancer. Specifically, this involves an operation called a mastectomy.

A mastectomy procedure involves the removal of the entire breast, often along with the nipple and lymph nodes (glands) in the armpit. In some cases, part of the muscle under the breast may also be removed if there is a risk the cancer has spread to this area.

Once surgery has been completed there will be a straight scar across your chest where your nipple used to be and possibly an indentation around that area where the breast tissue used to be.

After surgery

Most men are well enough to leave hospital one to three days after surgery. After the operation, it’s likely you will feel very tired and it may take a few weeks before you are well enough to start carrying out relatively strenuous activities, such as lifting objects or driving. Your MDT specialist nurse will be able to offer more specific advice about this.

The wound will take about two to three weeks to heal. It is important to keep the wound clean during this time. You should look for any signs that the wound may have become infected, such as redness and swelling around the wound or a discharge of pus. Inform your MDT as soon as possible if you suspect an infection.

It’s difficult to predict when you will feel able to return to work. Some people choose to remain off work until other treatments, such as radiotherapy, have been completed. Others prefer to return to work in between treatments. Your MDT will be able to advise you, but the final decision will be yours.

It can take several weeks to fully recover from the effects of a mastectomy. A structured exercise programme, where the intensity and amount of time spent exercising is gradually increased, will probably be recommended.

Your MDT will be able to provide you with more advice or refer you to a physiotherapist (a specialist with training in rehabilitation using exercise).

The Royal College of Surgeons have produced a useful leaflet for people who are recovering after having a mastectomy.

Complications of surgery

Following surgery, you may experience numbness or tingling at the site of the scar and in your upper arm. This is common and caused by nerve damage during surgery. The numbness and tingling should pass within a few weeks or months, although it can occasionally be permanent.

Another common complication is painful swelling in the arms and legs and, sometimes in other parts of the body, such as the head and chest. This is called lymphoedema and it is caused by the disruption of the lymphatic system (a series of channels and lymph nodes which is normally responsible for removing excess fluid from tissue).

If multiple lymph nodes (glands) are surgically removed it can disrupt the lymphatic system’s ability to drain fluid which can lead to swelling.

There is no cure for lymphoedema, but it is possible to control the symptoms using a combination of different techniques, such as massage and compression garments. See treating lymphoedema for more information.

Radiotherapy

Radiotherapy is a type of treatment involving a machine that releases high energy waves to destroy cancerous cells. It can be given a few weeks after surgery to prevent the cancerous cells returning.

A typical course of radiotherapy involves two to five sessions a week over the course of three to six weeks. The sessions are short and usually only last for 10 to 15 minutes.

Radiotherapy is not usually painful although you will probably experience some side effects. This is because the energy released during radiotherapy can also damage healthy cells.

Common side effects of radiotherapy can include:

  • extreme tiredness (fatigue)
  • feeling sick (nausea)
  • sore, red, and irritated skin on the breast (similar in appearance to sunburn)

The side effects of radiotherapy should pass after your course of treatment has finished, although some men experience prolonged fatigue for several months.

Radiotherapy can also be used in cases of advanced breast cancer to slow down the spread of the cancer and relieve the symptoms of pain. This is known as palliative radiotherapy. Palliative radiotherapy is usually given in just one or two doses and does not usually cause any side effects

Hormone therapy

About 90% of cases of breast cancers in men are oestrogen receptor positive or ER+ (E is used because the American spelling of oestrogen is ‘estrogen’). This means the cancerous cells require oestrogen to grow. Oestrogen is a type of hormone found in low levels in men and in much higher levels in women.

The aim of hormone therapy is to block the effects of oestrogen on the breast tissue to prevent the cancer reoccurring after surgery. It can also be used in cases of advanced breast cancer in order to slow down the spread of the cancer.

Tamoxifen

Tamoxifen is a hormone medication widely used for breast cancer. It is available in tablet or liquid form and it prevents oestrogen from entering the breast tissue cells.

However, the ideal length of treatment with tamoxifen is unclear. Studies in women with breast cancer suggest a five year course of treatment is the most effective in preventing the return of cancer and extending survival rates. However, it is unclear if this also applies to men.

Tamoxifen can also cause unpleasant side effects, which will be taken into consideration when your MDT is deciding what treatments to recommend. You can discuss the pros and cons of long-term treatment with tamoxifen with your MDT.

Side effects of tamoxifen can include:

  • reduced interest in sex (loss of libido)
  • inability to obtain or maintain an erection (erectile dysfunction)
  • headache
  • feeling sick, although taking your medication with food may help to reduce this side effect
  • changes in mood, such as feeling irritable or depressed

You should inform your MDT if you experience side effects that become particularly troublesome, as alternative medications are available.

Aromatase inhibitors

Aromatase inhibitors are an alternative type of hormone medication. They may be used if tamoxifen proves unsuccessful or if the side effects of tamoxifen are particularly troublesome. Aromatase inhibitors can also be used to slow the spread of advanced breast cancer.

In men, oestrogen is created when a protein called aromatase converts another hormone called androgens. Aromatase inhibitors block the effects of aromatase which, in turn, lowers the amount of oestrogen in the body.

Aromatase inhibitors are usually given in tablet form and taken daily for two to five years. As with tamoxifen, there is little available evidence (compared with female breast cancer) regarding what the most effective length of dosage is.

Side effects of aromatase inhibitors can include:

  • joint pain
  • lack of energy
  • hot flushes
  • skin rashes
  • feeling sick
  • being sick
  • thinning of the hair

However, it’s unlikely you will experience all of these.

Chemotherapy

Chemotherapy is used to treat cases of breast cancer where hormone therapy would be largely ineffective because the cancerous cells are not oestrogen receptor positive (ER+). It’s usually given after surgery to help prevent the cancer returning or it’s used to treat the symptoms of incurable cancer.

Chemotherapy for breast cancer involves taking a combination of cancer-killing medications. Treatment is usually given every two to three weeks, over the course of six months.

You may be given chemotherapy tablets (oral chemotherapy), chemotherapy injections (intravenous chemotherapy) or a combination of both.

The side effects of chemotherapy can include:

  • feeling sick
  • being sick
  • diarrhoea
  • loss of appetite
  • mouth ulcers
  • tiredness
  • skin rashes
  • infertility
  • hair loss

However, the side effects should resolve once your treatment has finished. Following treatment, your hair should grow back after about three to six months.

Chemotherapy can also weaken your immune system, making you more vulnerable to infection. It is therefore important to report any symptoms of a potential infection to your MDT such as:

  • a high temperature of 38C (100.4F) or above
  • flu-like symptoms, such chills or joint pain
  • a general sense of feeling unwell

You should also avoid close contact with people known to have an infection.

If you are sexually active, you should use a condom for 48 hours after receiving a dose of chemotherapy medication. This is because the medication used in chemotherapy could pass into your semen and cause irritation in the tissue of your partner’s genitals.

You should avoid having children while receiving chemotherapy because many of the medications can damage your sperm and increase your chances of having a baby with a birth defect. Again, using a reliable method of contraception, such as a condom, is recommended

Depending on the medications used, it may be several months after your course of chemotherapy has ended before you can safely have children. Your MDT will be able to give you a more detailed recommendation.

Biological therapy

Biological therapy uses medication to block the effects of a protein called human epidermal growth factor receptor 2 (HER2) in cases where HER2 is contributing to breast cancer.

Biological therapies are sometimes referred to as targeted therapies because they are designed to target biological processes that cancers rely on to grow and reproduce.

If you have high levels of the HER2 protein and are able to have biological therapy, you will probably be prescribed a medicine called trastuzumab. Trastuzumab, also known by the brand name Herceptin, is usually used after radiotherapy and/or chemotherapy to prevent cancerous cells returning.

Trastuzumab

Trastuzumab is a type of biological therapy known as a monoclonal antibody. Antibodies occur naturally in the body and are created by the immune system to destroy harmful cells, such as viruses and bacteria. The trastuzumab antibody targets and destroys cancer cells that are designed to respond to the HER2 protein.

Trastuzumab is given directly in to a vein (intravenously) through a drip. You will receive the treatment in hospital. Each treatment session takes up to one hour and the number of sessions you need will depend on whether your breast cancer is in its early or more advanced stages. On average, for early breast cancer you will need to have a session once every three weeks, and for cancer that is more advanced you will need to have weekly sessions.

Trastuzumab can cause side effects, including heart problems. This means that it is not suitable if you have a heart problem, such as angina, uncontrolled high blood pressure (hypertension) or heart valve disease. If you need to take trastuzumab, you will need to have regular tests on your heart to ensure it is not causing any problems.

Other side effects of trastuzumab can include:

  • an initial allergic reaction to the medication, which can cause nausea, wheezing, chills and fever
  • diarrhoea
  • tiredness
  • aches and pains

Find us on facebook

Latest from twitter

Ladies Fighting Breast Cancer
© Ladies Fighting Breast Cancer 2017
Registered charity number: 1088943
Cloud Shepherd Powered by Cloudshepherd
Ladies Fighting Breast Cancer Facebook Ladies Fighting Breast Cancer Twitter Ladies Fighting Breast Cancer Youtube Ladies Fighting Breast Cancer RSS