About Melanoma

Overview

Melanoma is a type of skin cancer that begins in melanocytes, the cells that produce melanin, the pigment responsible for skin color. It can start as a dark mole on the skin but can also develop in other pigmented tissues like the eye or mouth. Melanoma is a serious cancer because it can invade nearby tissues and spread to other parts of the body, such as the lung, liver, bone, or brain. Detecting and removing melanoma early increases the chances of successful treatment.

Causes and Risk Factors

Melanoma can be caused by exposure to ultraviolet (UV) radiation from the sun or tanning beds, which can change the skin and lead to cancer.

Non-modifiable risk factors for melanoma are factors that cannot be changed. These include:

Age: The risk of melanoma rises with age, but it is also common among individuals 30 and younger.
Gender: Women have a higher risk before age 50, while men’s risk is higher after 50.
Mole Count: A high number of common or atypical moles increases melanoma risk.
Family History: Having a family history of skin cancer raises the likelihood of melanoma.
Immune System Diseases: Conditions that weaken the immune system can increase melanoma risk.
Genetic Alterations: Inherited genetic changes can make melanoma more likely.
Physical Traits: Freckles, light skin, and light eye color are associated with a higher risk.

Modifiable risk factors for melanoma are factors that can be changed or influenced. These include:

Sun exposure: Limiting time in direct sunlight, especially during peak hours, can reduce UV exposure.
Severe sunburns, especially at a young age: Protecting skin with sunscreen or clothing can help prevent sunburns, lowering future melanoma risk.
Certain medications, like immunosuppressive drugs: Consulting a doctor about medication side effects may help manage risks.
Environmental exposure to chemicals: Limiting exposure to certain chemicals, such as pesticides or heavy metals, can decrease risk factors associated with melanoma.

Symptoms

Early symptoms of melanoma can include:

Changes to an existing mole
Development of a new, unusual growth on the skin
Moles with irregular shapes, irregular borders
Moles with multicolored or uneven coloring
Scaly, dry, or rough skin spots
Moles that are larger size than a quarter of an inch
Changes in size, shape, or color of the mole

As melanoma progresses or reaches higher severity, other common symptoms may appear such as:

Moles that ooze, bleed, or crust
Painful, tender, or itchy spots or sores and ulcers on or near a mole
Discolored spots of skin

Diagnosis

Healthcare providers commonly diagnose melanoma by:

Physical assessment and medical history: Diagnosis is performed by closely examining the skin, discussing symptoms, reviewing medical history, and performing a biopsy
Imaging tests: Magnetic resonance imaging (MRI), computed tomography (CT) scan, PET scan, chest X-ray, and ultrasound can help determine the stage of melanoma.
Lab tests: Blood chemistry studies and liver function tests may be used to check for signs of spread to other organs like the liver.

Treatment Options

The main goals of treating melanoma are to remove or destroy the cancerous cells, prevent the spread of the cancer to other parts of the body, and improve the patient's quality of life. The treatment options are:

Surgery is a common treatment option for early-stage melanoma. It involves removing the cancerous tissue and a margin of healthy skin around it to ensure all cancer cells are taken out.
Radiation therapy uses high-energy beams to target and kill cancer cells. It can be used after surgery to eliminate any remaining cancer cells or in cases where surgery is not possible.
Immunotherapy works by boosting the body's immune system to recognize and attack cancer cells. This treatment helps the immune system fight off melanoma effectively.
Chemotherapy involves using drugs to kill cancer cells. It may be recommended for advanced melanoma or when the cancer has spread to other parts of the body.
Targeted therapy focuses on specific genetic mutations in the cancer cells that drive their growth. Drugs target these mutations to block their effects and stop cancer progression.
Lifestyle changes such as protecting the skin from excessive sun exposure, avoiding tanning beds, and performing regular skin self-exams can help prevent melanoma or detect it early when treatment is most effective.

Combining different treatments like surgery, radiation therapy, immunotherapy, and targeted therapy can provide a comprehensive approach to treating melanoma and improving patient outcomes.