What is melanoma?
Melanoma is a kind of
skin cancer. It isn't as common as other types of skin cancer, but it is the
Melanoma usually looks like a flat mole with uneven edges and a shape that is not the same on both sides. It may be black, brown, or more than one color. Most melanomas show up as a new spot or skin growth. But they can form in an existing mole or other mark on the skin.
Melanoma can affect your skin only, or it may
spread to your organs and bones. As with other cancers, treatment for melanoma works best when the cancer is found early.
This topic is about melanoma that occurs in the skin. It doesn't cover melanoma that occurs in the eye or in any other part of the body besides the skin.
What causes melanoma?
You can get melanoma by
spending too much time in the sun. Too much UV radiation from sun exposure causes normal skin cells to become
abnormal. These abnormal cells quickly grow out of control and attack the
tissues around them.
You are at higher risk for melanoma if you have fair skin, a family history of melanoma, or many abnormal, or atypical, moles. These moles may fade into the skin and have a flat part that is level with the skin. They may be smooth or slightly scaly, or they may look rough and "pebbly."
What are the symptoms?
You may not have any symptoms in the early stages of melanoma. Or a melanoma may be sore, or it may itch or bleed.
Any change in
size , or
color of a mole may be a sign of melanoma.
Melanoma may look like a flat, brown or black mole
that has uneven
edges . Melanomas usually have an irregular or
asymmetrical shape. This means that one half of the mole doesn't match the
other half. They may be any size but are usually
0.25 in. (6 mm) or larger.
Melanomas can be found anywhere on your
body. Most of the time, they are on the upper back in men and women and on the
legs of women.
How is melanoma diagnosed?
Your doctor will check
your skin to look for melanoma. If your doctor thinks that you have melanoma, he or
she will remove a sample of tissue (biopsy) from the area around the melanoma. Another doctor, called a
pathologist, will look at the tissue to check for
If your biopsy shows melanoma, you may need to have
more tests to find out if it has spread to your
How is it treated?
The most common treatment is
surgery to remove the melanoma. That is all the treatment that you may need for
early-stage melanomas that have not spread to other parts of your body.
Other treatments for melanoma include chemotherapy, radiation therapy, immunotherapy, and targeted therapy.
Can you prevent melanoma?
The best way to prevent
all kinds of skin cancer, including melanoma, is to protect yourself whenever
you are out in the sun.
- Try to stay out
of the sun during the middle of the day (from 10 a.m. to 4 p.m.).
- Wear sun-protective clothes when you are outside, such as a hat that
shades your face, a long-sleeved shirt, and long pants.
- Use sunscreen every day. Your sunscreen should have an
SPF of least 30. Look for a sunscreen that protects
against both types of UV radiation in the sun's rays—UVA and
UVB. When you are outdoors for long periods of time, reapply sunscreen every 2 hours.
- Use a higher SPF when you are at higher
- Avoid sunbathing and tanning salons.
Check your skin every month for odd marks, moles, or
sores that will not heal. Check all of your skin, but pay extra attention to areas that get a lot of sun,
such as your hands, arms, and back. Ask your doctor to check your skin during
regular physical exams or at least once a year.
Frequently Asked Questions
Learning about melanoma:
- What is melanoma?
- What causes it?
- What happens with melanoma?
- What are the symptoms?
- What increases my risk for melanoma?
- Can I prevent it?
- When do I need to see my doctor?
- How can I protect my skin from ultraviolet radiation and skin cancer?
- Can a test find skin cancer early?
- How is melanoma diagnosed?
- What is a skin biopsy?
- What is a sentinel lymph node biopsy?
- What are cancer stages?
- How is melanoma treated?
- Which medicines are used to treat it?
- Will I need surgery?
- Will I need radiation therapy?
- When should I call my doctor?
Living with melanoma:
- What can I do at home to manage the side effects of treatment?
- What is palliative care?
- What is hospice care?
- How can I prepare for end-of-life issues?
Health Tools help you make wise health decisions or take action to improve your health.
Actionsets are designed to help people take an active role in managing a health condition.
| ||Skin Cancer: Protecting Your Skin|
Melanoma is most often caused by too much exposure to the sun's UV rays. Examples include:1
- Having had blistering sunburns at any time of life.
- Getting intense
sun exposure every now and then.
Things that make getting melanoma more likely include your skin type, the color of your hair, and the color of your eyes.
You may not have any symptoms in the early stages of melanoma. Or a melanoma may be sore, or it may itch or bleed.
Most melanomas start as a new skin growth on unmarked skin. The growth may change color, shape, or size. These types of changes are an early sign that the growth is melanoma. But melanoma can also develop in an existing mole or other mark on the skin. Or it may look like a bruise that isn't healing or show up as a brown or black streak under a fingernail or toenail.
Melanoma can grow
anywhere on the body. It most often occurs on the upper back in men and women and on
the legs in women. Less often, it can grow in other places, such as on the soles, palms, nail beds, or
mucous membranes that line body cavities such as the
mouth, the rectum, and the vagina.
On older people, the face is the most common
place for melanoma to grow. And in older men, the most common sites are the
neck, scalp, and ears.1
Signs of melanoma
The most important warning sign for
melanoma is any change in size,
shape, or color of a
mole or other skin growth, such as a birthmark. Watch
for changes that occur over a period of weeks to a month. The
ABCDE system tells you what changes to look for.
- A is for
asymmetry . One half of the mole or skin growth doesn't
match the other half.
- B is for
border irregularity . The edges are ragged, notched, or blurred.
is for color . The color is not the same throughout the mole.
- D is for
diameter . The mole or skin growth is larger than
size of a pencil eraser.
- E is for evolution . There is a change in the size, shape,
symptoms (such as itching or tenderness), surface (especially bleeding), or
color of a mole.
Melanoma in an existing mole
Signs of melanoma in an existing mole include changes
- Elevation, such as thickening or raising of a
previously flat mole.
- Surface, such as scaling, erosion, oozing,
bleeding, or crusting.
- Surrounding skin, such as redness, swelling,
or small new patches of color around a larger lesion (satellite
- Sensation, such as itching, tingling,
burning, or pain.
- Consistency, such as softening or small pieces that break
other skin conditions (such as
basal cell cancer) have features similar to those of
Signs of melanoma that has spread
melanoma that has spread (metastatic melanoma) may be vague. They include swollen
lymph nodes, especially in the armpit or
groin, and a colorless lump or thickening under the
Melanoma develops when normal pigment-producing skin
melanocytes become abnormal, grow uncontrollably, and
invade surrounding tissues. Usually only one melanoma develops at a time.
Melanomas can begin in an existing
mole or other skin growth, but most start in unmarked
When melanoma is found early, it can often be cured by surgery to remove it. But after melanoma spreads, it is harder to cure.
Experts talk about prognosis in terms of "5-year survival rates." The
5-year survival rate means the percentage of people who are still alive 5 years
or longer after their cancer was discovered. Remember that these are only
averages. Everyone's case is different, and these numbers don't necessarily
show what will happen to you. The estimated 5-year survival rate for melanoma
- 98% if cancer is found early and treated
before it has spread.
- 62% if the cancer has spread to close-by
- 15% if the cancer has spread farther away, such as to the
liver, brain, or bones.
A risk factor for melanoma is something that increases your chance of getting this cancer. Having one or more of these risk factors can make it more likely that you will get melanoma. But it doesn't mean that you will definitely get it. And many people who get melanoma don't have any of these risk factors.
Risk factors for
- Too much exposure to
the sun's UV rays. This includes:
- Having had blistering sunburns at any time of life.
- Getting intense
sun exposure every now and then.
- Fair skin that doesn't tan and tends to sunburn or freckle, along with blue or green eyes or red or blond hair.
- Numerous moles and/or more than one
- A large mole you have had since
- A personal or family history of
- Changes in your genes, like the change that causes a skin disease called Xeroderma pigmentosum.
The most important warning sign
melanoma is a change in size, shape, or color of a
mole or other skin growth (such as a birthmark). Call
your doctor if you have:
- Any change in a mole, including size, shape,
color, soreness, or pain.
- A bleeding mole.
- A discolored
area under a fingernail or toenail not caused by an injury.
general darkening of the skin unrelated to sun exposure.
Call your doctor immediately if you
have been diagnosed with melanoma and:
- You have trouble breathing or
- You cough up or spit up blood.
- You have blood in your vomit or bowel
- Your urine or bowel movement is black, and the blackness
isn't caused by taking iron or Pepto-Bismol.
Who to see
The following health professionals can
help diagnose melanoma:
- Family medicine doctor
- Nurse practitioner
- Physician assistant
If further treatment is needed, melanoma can be treated by a dermatologist, surgeon,
plastic or reconstructive surgeon, or
To prepare for your appointment, see the topic Making the Most of Your Appointment.
To check for melanoma and whether or not it has spread, your doctor may:
- Do a physical exam of your skin.
- Do a skin biopsy. Your doctor will
take a sample of your skin and have it tested for melanoma.
- Check your lymph nodes to see if
they are larger than normal. This may be followed by a sentinel lymph node biopsy to see if the melanoma has
spread to your
- Use imaging tests to
see if the cancer has spread to other parts of your body, such as the lungs, brain,
or liver. These tests include emission tomography (PET scan),
computed tomography (CT scan), and
magnetic resonance imaging (MRI).
may include total-body photography to look for changes in any mole and to
watch for new moles appearing in normal skin. A series of photos of the
suspicious lesions may be taken. Then the photos can be used as a baseline to
compare with follow-up photos.
Finding skin cancer early
- Do a skin self-exam once a month. Your partner or a close friend can help you
check places that are hard to see, such as your scalp
- Have your doctor check
any suspicious skin changes. Be sure you see your doctor at least once a year. You may need checkups more often if you have:
- Familial atypical mole and melanoma (FAM-M) syndrome, which is an inherited tendency to develop
melanoma. Your doctor may need to check you every 4 to
exposure to ultraviolet (UV)
radiation because of your job, hobbies, or outdoor activities.
- Abnormal moles called
atypical moles. These moles aren't
cancerous. But their presence is a warning of an inherited tendency to develop
Melanoma may be cured if it's found
and treated in its early stages when it affects only the skin. If melanoma has spread, it is much harder to treat.
How much and what type of treatment you need depends on the
Treatments for melanoma include:
- Surgery. The entire
melanoma is cut out, along with a border (margin) of normal-appearing skin.
- Chemotherapy, which uses medicines to stop or slow the growth of cancer cells.
- Immunotherapy, which uses medicines to help your body's immune system fight the cancer.
- Targeted therapy with inhibitors. These are medicines that inhibit, or prevent, cancer cells from growing by blocking signals in the cell. Inhibitors are only given if a gene test shows that a person has the BRAF gene change, or mutation.
Metastatic and recurrent melanoma
Melanoma can spread (metastasize) to other parts of the body, where it can cause tumors. When melanoma has spread and appears as a tumor in another part of the body, it sometimes can be successfully treated with surgery. But metastatic melanoma usually needs other treatments, too, such as chemotherapy, interferon, immunotherapy, or radiation therapy.
Metastatic melanoma and melanoma that can't be removed with surgery may be treated with inhibitors.
Melanoma can come
back after treatment. This is called recurrent melanoma. All of the treatments mentioned above may be used for recurrent melanoma as well as:
- Hyperthermic isolated limb perfusion. If the melanoma is on your arm or leg, chemotherapy medicine may be added to a warm solution and injected into the bloodstream of that arm or leg. The flow of blood to and from that limb is stopped for a short time so the medicine can go right to the tumor.
- Medicines injected directly into the tumor.
- Lasers to destroy the tumor.
If your melanoma can't be cured, your doctors will try to control symptoms, reduce complications, and keep you comfortable.
Your doctor may recommend that you join a clinical trial if one is available in your area. Clinical trials may offer the best treatment option for people who have metastatic cancer. Clinical trials study other treatments, such as combinations of chemotherapy, vaccines, and immunotherapies. They are also studying targeted therapy.
Regular follow-up appointments are
important after you have been diagnosed with melanoma.
Your doctor will set up a regular schedule of checkups that will happen less often as time goes on.
To learn more about specific treatments for melanoma, go to the National Cancer Institute's website at www.cancer.gov/cancertopics/types/melanoma.
Finding out that you have cancer can change your life. You may feel like your world has turned upside down and
you have lost all control. Talking with family, friends, or a counselor can really help. Ask your doctor about support groups. Or call the American Cancer Society (1-800-227-2345) or visit its website at www.cancer.org.
Palliative care is a kind of care for people who have a serious illness. It's different from care to cure your illness. Its goal is to improve your quality of life—not just in your body but also in your mind and spirit.
You can have this care along with treatment to cure your illness.
Palliative care providers will work to help control pain or side effects. They may help you decide what treatment you want or don't want. And they can help your loved ones understand how to support you.
If you're interested in palliative care, talk to your doctor.
For more information, see
For some people who have advanced cancer, a time comes when treatment to cure the cancer no longer seems like a good choice. This can be because the side effects, time, and costs of treatment are greater than the promise of cure or relief. But you can still get treatment to make you as comfortable as possible during the time you have left. You and your doctor can decide when you may be ready for hospice care.
For more information, see
- Hospice Care.
- Care at the End of Life.
To help prevent skin cancer:
- Protect your skin.
This includes staying out of the sun
during the midday hours and using sunscreen.
- Skin Cancer: Protecting Your Skin
- Examine your skin regularly, and have
your doctor check your skin during all other health exams, or at least once a
Home treatment can help you manage any side effects that your treatment might cause. If your doctor gives you instructions or medicines to
treat these side effects, be sure to follow them. In general, healthy habits such
as eating a balanced diet and getting enough sleep and exercise may help
control your symptoms.
- Home treatment for nausea or vomiting
includes watching for and treating early signs of
dehydration, such as having a dry mouth or feeling lightheaded when you stand up. Eating smaller meals may help. So can a little bit of ginger candy or ginger tea.
- Home treatment for diarrhea includes
resting your stomach and watching for signs of dehydration. Check with your
doctor before using any nonprescription medicines for your
- Home treatment for constipation
includes gentle exercise along with getting enough fluids and having a diet that
is high in fruits, vegetables, and fiber. Check with your doctor before using a
laxative for your constipation.
- Home treatment for fatigue includes making sure you get extra rest. Let your symptoms be your guide.
Fatigue is often worse at the end of treatment or just after treatment is
- Home treatment for sleep problems includes going to bed at the same time every night and getting exercise during the day.
- Home treatment for pain includes using heat and cold packs.
Stress, hair loss, and body image
- The diagnosis of melanoma and the need for treatment can be very stressful. You may be able to reduce your stress by expressing your feelings to others. Learning relaxation techniques may also help reduce your
- Hair loss can be emotionally
distressing. Not all chemotherapy medicines cause hair loss. And some people
have only mild thinning that is noticeable only to them. Talk to your doctor
about whether hair loss is an expected side effect with the medicines you will
- Your feelings about your body may change following a
diagnosis of melanoma and the need for treatment.
Adapt to your body-image changes by
talking openly about your concerns with your partner and discussing your
feelings with your doctor. Your doctor may also be able to refer you to groups
that can offer more support and information.
Having cancer can change your life in many ways. For help in managing these changes, see the topic Getting Support When You Have Cancer.
Medicines for melanoma include:
- Immunotherapy medicines, such as ipilimumab and interleukin-2 (IL-2).
- Chemotherapy medicines, such as dacarbazine and temozolomide.
- Inhibitors, such as sorafenib and vemurafenib.
Medicines used to treat melanoma may be given as an outpatient treatment. But sometimes people need a short hospital stay.
Medicines may be taken by mouth or injected into your bloodstream so they can travel throughout your body. If the melanoma is on an arm or a leg, chemotherapy medicines may be added to a warm solution that is injected into the bloodstream of that limb. The flow of blood to and from that limb is stopped for a short time so the medicine can go right to the tumor. This is called hyperthermic isolated limb perfusion.
The side effects of some of the melanoma medicines can be serious.
- Dacarbazine and temozolomide can cause an allergic reaction, severe nausea and vomiting, liver problems, and flu-like symptoms, such as fever, aches, and fatigue.
- Interleukin-2 can cause low blood pressure, irregular heart rhythms, fluid in the lungs, fever, and in rare cases, death.
- Ipilimumab can cause a reaction against your own body tissues that may be severe or even life-threatening, such as colitis, hepatitis, or inflammation of the skin, pituitary gland, thyroid gland, or adrenal gland. If this happens, you may need to stop taking ipilimumab and have treatment for the other symptoms.
- Vemurafenib can cause joint pain, hair loss, and skin rashes. It may also cause other symptoms, such as skin itching, sensitivity to sunlight, and squamous cell skin cancer.
Surgery is the most common treatment for melanoma. Lymph nodes may be removed at the same time to check them for cancer. Surgery also may be done to remove lymph nodes that have cancer or to remove melanoma that may have spread to other parts of the body.
The most common types of surgery used to treat melanoma
- Excision.This surgery takes out the melanoma and a little of the tissue around it.
- Lymph node dissection (lymphadenectomy). This is
surgery to remove lymph nodes to see if they have cancer cells. Or this may be done to remove lymph nodes that are cancerous.
- Sentinel lymph node biopsy. This surgery removes the first lymph node that the cancer may have spread to from the tumor. If this lymph node doesn't have any cancer cells, then you may not need to have more lymph nodes removed.
After removal of a
melanoma, you may need a skin
graft or other reconstructive surgery for cosmetic reasons or to restore function. This is most likely if the
melanoma was large or was a late-stage tumor.
Radiation treatment is the use of high-energy X-rays to kill cancer cells and shrink tumors. It isn't as effective in treating melanoma as it is in other cancers. But it may be used to reduce the risk of melanoma coming back. Or it may be used when melanoma has spread to other parts fo the body, such as the brain or bone.
People sometimes use complementary therapies along with medical treatment to help relieve symptoms and side effects of cancer treatments. Some of the complementary therapies that may be helpful include:
- Acupuncture, to relieve pain.
- Meditation or yoga, to relieve stress.
- Massage and biofeedback, to reduce pain and ease tension.
- Breathing exercises for relaxation.
Mind-body treatments like the ones listed above may help you feel better. They can make it easier to cope with cancer treatments. They also may reduce chronic low back pain, joint pain, headaches, and pain from treatments.
Before you try a complementary therapy, talk to your doctor about the possible value and potential side effects. Let your doctor know if you are already using any such therapies. They are not meant to take the place of standard medical treatment.
|NIH: National Cancer Institute (U.S.)|
|Web Address: ||www.cancer.gov (or https://livehelp.cancer.gov/app/chat/chat_launch for live help online)|
|Skin Cancer Foundation (U.S.)|
|Web Address: ||www.skincancer.org|
- Health Screening: Finding Health Problems Early
- Preparing for Your Hospital Stay
- Skin Cancer, Nonmelanoma
- Skin Changes
Bailey EC, et al. (2012). Cutaneous melanoma. In LA Goldman et al., eds., Fitzpatrick's Dermatology in General Medicine, 8th ed., vol. 1, pp. 1416–1444. New York: McGraw-Hill.
American Cancer Society (2012). Cancer Facts and Figures 2012. Atlanta: American Cancer Society. Available online: http://www.cancer.org/Research/CancerFactsFigures/CancerFactsFigures/cancer-facts-figures-2012.
Other Works Consulted
Fisher RA, Larkin J (2010). Malignant melanoma (metastatic), search date March 2010. BMJ Clinical Evidence. Available online: http://www.clinicalevidence.com.
Habif TP, et al. (2011). Malignant melanoma, lentigo maligna. In Skin Disease: Diagnosis and Treatment, 3rd ed., pp. 518–526. Edinburgh: Saunders.
Halpern AC, Myskowski PL (2009). Malignant cutaneous tumors. In EG Nabel, ed., ACP Medicine, section 2, chap. 10. Hamilton, ON: BC Decker.
Markowitz O, Rigel DS (2010). Malignant melanoma. In MG Lebwohl et al., eds., Treatment of Skin Disease: Comprehensive Therapeutic Strategies, pp. 424–428. Edinburgh: Saunders Elsevier.
Marsden JR, et al. (2010). Revised U.K. Guidelines for the management of cutaneous melanoma 2010. British Journal of Dermatology, 163(2): 238–256. Also available online: http://www.bad.org.uk//site/622/default.aspx.
National Cancer Institute (2012). Melanoma Treatment PDQ—Patient Version. Available online: http://www.cancer.gov/cancertopics/pdq/treatment/melanoma/Patient/page1/AllPages.
National Cancer Institute (2012). Skin Cancer Prevention PDQ—Health Care Professional Version. Available online: http://www.cancer.gov/cancertopics/pdq/prevention/skin/HealthProfessional.
National Cancer Institute (2012). Skin Cancer Prevention PDQ—Patient Version. Available online: http://www.cancer.gov/cancertopics/pdq/prevention/skin/Patient.
National Comprehensive Cancer Network (2012). Melanoma. Clinical Practice Guidelines in Oncology, version 3. Available online: http://www.nccn.org/professionals/physician_gls/PDF/melanoma.pdf.
U.S. Preventive Services Task Force (2012). Behavioral counseling to prevent skin cancer: Recommendation statement. Available online: http://www.uspreventiveservicestaskforce.org/uspstf11/skincancouns/skincancounsrs.htm.
|By: ||Healthwise Staff ||Current as of: April 18, 2014|
|Medical Review: ||Kathleen Romito, MD - Family Medicine|