How Common Is Skin Cancer On Darker Skin
Darker skin has more melanin, a pigment that determines skin tone. Having more melanin can absorb and deflect UV radiation, protecting the skin from sun damage.
Because their skin is less vulnerable to damage, Black people have lower rates of skin cancer. For example, melanoma occurs in about 1 in 38 white people compared with 1 in 1,000 Black people.
However, this does not mean people with darker skin cannot get skin cancer. When they do get it, it often goes undiagnosed until it has reached a more advanced stage. Because advanced cancer is harder to treat, Black people are
Some signs of BCC to look for include:
- a new or unusual growth on the skin
- a smooth patch with a translucent bump
- a growth with jelly-like contents
- a lesion that bleeds spontaneously
Black individuals commonly get BCC that is darker and less pearly in appearance.
Can Skin Cancer Be Prevented
Skin cancer is almost entirely preventable. Making a part of your life, avoiding sunburn, and checking your skin regularly will help prevent further damage to your skin.
Protect your skin from UV radiation and help prevent skin cancer by:
- slipping on sun-protective clothing: cover your shoulders, neck, arms, legs and body.
- slopping on sunscreen thats rated SPF 30+ or higher, broad-spectrum and water resistant.
- slapping on a hat that shades your face, neck and ears.
- seeking shade under trees, umbrellas and buildings from direct sunlight and reflective surfaces.
- sliding on sunglasses that wrap around your face to protect your eyes and surrounding skin.
- staying away from sun lamps, solariums or sunbeds, which emit dangerous levels of UV radiation.
UV radiation from the sun varies depending on time of day, season, where you live and cloud coverage. Protect your skin whenever UV Index levels are above 3. Use Cancer Council Australias free SunSmart app to check the UV Index for your area any time.
Most Australians will get enough vitamin D even with sun protection at UV level 3 or above. Babies and children should be protected from the sun, since they are particularly vulnerable to UV radiation harm.
While using fake tanning cream isnt harmful to your skin, it offers no protection from UV radiation. You still need to protect yourself from the sun.
What Are The Stages Of Melanoma
Cancerstaging is how doctors describe the extent of cancer in your body. Staging is defined by the characteristics of the original melanomatumor and if/how far it has spread in your body.
Melanoma is divided into stages using five Roman numerals and up to four letters that indicate a higher risk within each stage. The stage is determined mostly by specific details about the tumor and its growth that are tallied in a system called TNM. Read more about the TNM system.
Your stage is important because cancer treatment options and prognoses are determined by stage.
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How Common Is Skin Cancer
Skin cancer is the most common cancer diagnosed in the U.S.
Other skin cancer facts:
- Around 20% of Americans develop skin cancer sometime in their life.
- Approximately 9,500 Americans are diagnosed with skin cancer every day.
- Having five or more sunburns in your life doubles your chance of developing melanoma. The good news is that the five-year survival rate is 99% if caught and treated early.
- Non-Hispanic white persons have almost a 30 times higher rate of skin cancer than non-Hispanic Black or Asian/Pacific Islander persons.
- Skin cancer in people with skin of color is often diagnosed in later stages when its more difficult to treat. Some 25% of melanoma cases in African Americans are diagnosed when cancer has spread to nearby lymph nodes.
How Is The Stage Determined
The system most often used to stage basal and squamous cell skin cancers is the American Joint Commission on Cancer TNM system. The most recent version, effective as of 2018, applies only to squamous and basal cell skin cancers of the head and neck area . The stage is based on 3 key pieces of information:
- The size of the tumor and if it has grown deeper into nearby structures or tissues, such as a bone
- If the cancer has spread to nearby lymph nodes
- If the cancer has spread to distant parts of the body
Numbers or letters after T, N, and M provide more details about each of these factors. Higher numbers mean the cancer is more advanced.
Once a persons T, N, and M categories have been determined, this information is combined in a process called stage grouping to assign an overall stage. The earliest stage of skin cancer is stage 0 . The other stages range from I through IV . As a rule, the lower the number, the less the cancer has spread. A higher number, such as stage IV, means cancer has spread more.
If your skin cancer is in the head and neck area, talk to your doctor about your specific stage. Cancer staging can be complex, so ask your doctor to explain it to you in a way you understand. For more information, seeCancer Staging.
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When Should I See My Doctor
Its important to check your own skin regularly to find any new or changing spots.
See your doctor or dermatologist straight away if you notice any changes to your skin, such as:
- an ‘ugly duckling’ a spot that looks or feels different to any others
- a spot that changes size, shape, colour or texture over time
- a sore that doesnt go away after a few weeks
- a sore that itches or bleeds
See the ‘ABCDE’ of skin cancer, above.
Stages Of Melanoma Skin Cancer
Staging describes or classifies a cancer based on how much cancer there is in the body and where it is when first diagnosed. This is often called the extent of cancer. Information from tests is used to find out the size of the tumour, which parts of the skin have cancer, whether the cancer has spread from where it first started and where the cancer has spread. Your healthcare team uses the stage to plan treatment and estimate the outcome .
The most common staging system for melanoma skin cancer is the TNM system. For melanoma skin cancer there are 5 stages stage 0 followed by stages 1 to 4. Often the stages 1 to 4 are written as the Roman numerals I, II, III and IV. Generally, the higher the stage number, the more the cancer has spread. Talk to your doctor if you have questions about staging.
When describing the stage, doctors often use the words early stage, locoregional or metastatic.
Early stage means that the cancer is only in where it started and has not spread to other parts of the body. It includes stage 0, stage 1A, stage 1B, stage 2A, stage 2B and stage 2C melanoma skin cancers.
Locoregional means the cancer has spread to nearby lymph nodes, or it has spread to nearby areas of skin or lymph vessels. It includes stage 3 melanoma skin cancer.
Metastatic means that the cancer is in a part of the body farther from where it started. It includes stage 4 melanoma skin cancer.
Find out more about .
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Causes Of Skin Cancer
UV rays cause skin cancer by creating changes in the cells of your skin. In some cases, the UV rays cause direct damage to your cells. Tans and sunburns, for example, are both signs that UV rays have damaged your skin. In other cases, UV rays cause skin cancer indirectly, by weakening the immune system.
Many studies on skin cancer show that people who have suffered many severe sunburns in childhood are at greater risk of developing skin cancer. Family history, some chemical exposures, and immune dysfunction conditions can also create a greater risk of developing skin cancer.
What Are The Different Levels Of Skin Cancer
The different levels of skin cancer are most commonly referred to as stages. Healthcare providers use the skin cancer stages to describe the location and severity of the skin cancer in question, indicating if or how it has spread to other parts of the body. If youve recently received a skin cancer diagnosis, you might be wondering about which treatment options are right for you. Understanding the different levels of skin cancer can help you have a more informed conversation with your dermatologist.
Basal and squamous cell skin cancers are the most common forms of the disease, and each type may progress through five stages: stage 0 and stages I IV. Skin cancer is highly treatable when caught in the early stages, and the importance of regular professional screenings cannot be overstated. Well provide more details on each stage in the guide below.
After Squamous Cell Cancer Of The Skin Has Been Diagnosed Tests Are Done To Find Out If Cancer Cells Have Spread Within The Skin Or To Other Parts Of The Body
The process used to find out if cancer has spread within the skin or to other parts of the body is called staging. The information gathered from the staging process determines the stage of the disease. It is important to know the stage in order to plan treatment for squamous cell carcinoma of the skin.
Basal cell carcinoma of the skin rarely spreads to other parts of the body. Staging tests to check whether basal cell carcinoma of the skin has spread are usually not needed.
The following tests and procedures may be used in the staging process for squamous cell carcinoma of the skin:
Squamous Cell Carcinoma Treatment
Squamous cell carcinomas detected at an early stage and removed promptly are almost always curable and cause minimal damage. However, left untreated, they may grow to the point of being very difficult to treat.
A small percentage may even metastasize to distant tissues and organs. Your doctor can help you determine if a particular SCC is at increased risk for metastasis and may need treatment beyond simple excision.
Fortunately, there are several effective ways to treat squamous cell carcinoma. The choice of treatment is based on the type, size, location, and depth of penetration of the tumor, as well as the patients age and general health. Squamous cell carcinoma treatment can almost always be performed on an outpatient basis.
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Different Types Of Cancer Start In The Skin
Skin cancer may form in basal cells or squamous cells. Basal cell carcinoma and squamous cell carcinoma are the most common types of skin cancer. They are also called nonmelanoma skin cancer. Actinic keratosis is a skin condition that sometimes becomes squamous cell carcinoma.
This summary is about basal cell carcinoma, squamous cell carcinoma of the skin, and actinic keratosis. See the following PDQ summaries for information on melanoma and other kinds of cancer that affect the skin:
I’ve Been Diagnosed With Melanomawhat Happens Next
Doctors use the TNM system developed by the American Joint Committee on Cancer to begin the staging process. Its a classification based on three key factors:
T stands for the extent of the original tumor, its thickness or how deep it has grown and whether it has ulcerated.
What Is Breslow depth?
Breslow depth is a measurement from the surface of the skin to the deepest component of the melanoma.
Tumor thickness: Known as Breslow thickness or Breslow depth, this is a significant factor in predicting how far a melanoma has advanced. In general, a thinner Breslow depth indicates a smaller chance that the tumor has spread and a better outlook for treatment success. The thicker the melanoma measures, the greater its chance of spreading.
Tumor ulceration: Ulceration is a breakdown of the skin on top of the melanoma. Melanomas with ulceration are more serious because they have a greater risk of spreading, so they are staged higher than tumors without ulceration.
N indicates whether or not the cancer has already spread to nearby lymph nodes. The N category also includes in-transit tumors that have spread beyond the primary tumor toward the local lymph nodes but have not yet reached the lymph nodes.
M represents spread or metastasis to distant lymph nodes or skin sites and organs such as the lungs or brain.
After TNM categories are identified, the overall stage number is assigned. A lower stage number means less progression of the disease.
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What Cancer Staging Is
Staging is a way of describing the size of a cancer and how far it has grown. When doctors first diagnose a cancer, they carry out tests to:
- check how big the cancer is
- whether it has spread into surrounding tissues
- whether it has spread to other parts of the body
Cancer staging may sometimes includes the grade of the cancer. This describes how similar a cancer cell is to a normal cell.
How The Government Of Canada Protects You
The Public Health Agency of Canada monitors cancer in Canada. PHAC identifies trends and risk factors for cancer, develops programs to reduce cancer risks, and researches to evaluate risks from the environment and human behaviours. Health Canada also promotes public awareness about sun safety and the harmful effects of UV rays.
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How Prostate Cancer Is Diagnosed And Staged
Cancer staging helps you and your doctor understand how advanced your cancer is and how much it has spread at the time of diagnosis. Knowing your cancer stage also helps your doctor determine the best treatment options for you and estimate your chance of survival.
The most widely used staging system for cancer is the TNM system that classifies cancer from stage 1 to stage 4.
TNM stands for:
- Tumor: the size and extent of the tumor
- Nodes: the number or extent of nearby lymph node involvement
- Metastasis: whether cancer has spread to distant sites in the body
The TNM scale is used for many types of cancer. When a doctor uses it to determine your prostate cancer stage, theyll consider several other factors as well, including:
- grade groups
Where Within The Skin Layers Does Skin Cancer Develop
Where skin cancer develops specifically, in which skin cells is tied to the types and names of skin cancers.
Most skin cancers begin in the epidermis, your skins top layer. The epidermis contains three main cell types:
- Squamous cells: These are flat cells in the outer part of the epidermis. They constantly shed as new cells form. The skin cancer that can form in these cells is called squamous cell carcinoma.
- Basal cells: These cells lie beneath the squamous cells. They divide, multiply and eventually get flatter and move up in the epidermis to become new squamous cells, replacing the dead squamous cells that have sloughed off. Skin cancer that begins in basal cells is called basal cell carcinoma.
- Melanocytes: These cells make melanin, the brown pigment that gives skin its color and protects your skin against some of the suns damaging UV rays. Skin cancer that begins in melanocytes is called melanoma.
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Types Of Skin Malignancies:
- Melanoma the least common form of skin cancer, but responsible for more deaths per year than squamous cell and basal cell skin cancers combined. Melanoma is also more likely to spread and may be harder to control.
- Nonmelanoma malignancies:
These skin malignancies are typically caused by ultraviolet radiation from exposure to the sun and tanning beds.
Squamous Cell Carcinoma In Situ
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Squamous cell carcinoma in situ, also known as Bowens disease, is a precancerous condition that appears as a red or brownish patch or plaque on the skin that grows slowly over time. The patches are often found on the legs and lower parts of the body, as well as the head and neck. In rare cases, it has been found on the hands and feet, in the genital area, and in the area around the anus.
Bowens disease is uncommon: only 15 out of every 100,000 people will develop this condition every year. The condition typically affects the Caucasian population, but women are more likely to develop Bowens disease than men. The majority of cases are in adults over 60. As with other skin cancers, Bowens disease can develop after long-term exposure to the sun. It can also develop following radiotherapy treatment. Other causes include immune suppression, skin injury, inflammatory skin conditions, and a human papillomavirus infection.
Bowens disease is generally treatable and doesnt develop into squamous cell carcinoma. Up to 16% of cases develop into cancer.
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Staging For Basal Cell Carcinoma And Squamous Cell Carcinoma Of The Skin Depends On Where The Cancer Formed
Staging for basal cell carcinoma and squamous cell carcinoma of the eyelid is different from staging for basal cell carcinoma and squamous cell carcinoma found on other areas of the head or neck. There is no staging system for basal cell carcinoma or squamous cell carcinoma that is not found on the head or neck.
Surgery to remove the primary tumor and abnormal lymph nodes is done so that tissue samples can be studied under a microscope. This is called pathologic staging and the findings are used for staging as described below. If staging is done before surgery to remove the tumor, it is called clinical staging. The clinical stage may be different from the pathologic stage.