Superficial spreading melanoma is the most common form of melanoma, accounting for around 70% of all cases, and requires careful attention to treatment approaches that match each patient’s unique situation and disease stage.

Understanding Treatment Approaches for Superficial Spreading Melanoma

When someone receives a diagnosis of superficial spreading melanoma, the primary goal of treatment is to remove the cancer completely and prevent it from returning or spreading to other parts of the body. The treatment plan depends on several factors, including how deeply the melanoma has grown into the skin, whether it has spread to nearby lymph nodes or other areas, and the patient’s overall health condition.^[3]

Superficial spreading melanoma has a unique growth pattern. It tends to grow horizontally across the top layer of skin, called the epidermis, sometimes for months or even years before it begins growing deeper. This characteristic gives doctors an opportunity to catch and treat it early, which significantly improves outcomes. When detected in its earliest stages, melanomas have a cure rate approaching 99 percent.^[3]

Treatment decisions are made by a specialized care team that includes dermatologists, surgical oncologists, and other specialists who work together to create an individualized plan. Medical societies and cancer organizations have established guidelines that help doctors determine the most appropriate treatment based on proven clinical evidence. At the same time, ongoing research through clinical trials is exploring new therapies that may offer additional options for patients, particularly those with more advanced disease.^[9]

Standard Treatment Methods

Surgery is the cornerstone of treatment for superficial spreading melanoma, especially when the cancer is discovered early. The main surgical procedure involves removing the melanoma along with a margin of healthy-looking skin around it. This margin helps ensure that any cancer cells that may have spread slightly beyond the visible tumor are also removed. The size of this margin depends on how thick the melanoma measures under the microscope.^[9]

For very thin melanomas caught early, the surgical excision may be relatively straightforward, performed under local anesthesia in an outpatient setting. The procedure typically involves numbing the area, cutting out the melanoma and surrounding tissue, and closing the wound with stitches. In cases where the melanoma is located in a visible area such as the face, a plastic surgeon may perform the procedure to achieve the best cosmetic result.^[9]

When a large area of skin needs to be removed, doctors may perform a skin graft, which involves taking healthy skin from another part of the body and using it to cover the surgical site. This technique helps the wound heal properly and can improve the appearance of the treated area.^[9]

If the melanoma has grown deeper or shows signs that it may have spread, doctors may recommend additional surgery to remove nearby lymph nodes. These are small, bean-shaped organs that are part of the immune system and can be the first place melanoma cells travel when they spread beyond the original tumor site. This procedure, called a lymph node dissection, helps determine whether the cancer has spread and can improve outcomes by removing any hidden cancer cells.^[9]

The duration of surgical treatment varies depending on the extent of the disease. Simple excisions can be completed in under an hour, while more extensive procedures involving lymph node removal may take several hours. Recovery time also varies, with most patients able to return to normal activities within a few weeks, though this depends on the location and size of the surgery.^[13]

Side effects from surgery are generally manageable and may include pain at the surgical site, swelling, bruising, and scarring. Some patients experience numbness or tingling near the incision, particularly if nerves were affected during the procedure. When lymph nodes are removed, there is a risk of lymphedema, which is swelling in the arm or leg caused by fluid buildup. This condition can be chronic and requires ongoing management.^[13]

Advanced Treatment Options Beyond Surgery

For melanomas that cannot be completely removed with surgery, or for cases where the cancer has spread to lymph nodes or other parts of the body, additional treatment methods may be recommended. Radiotherapy, which uses high-energy rays to kill cancer cells, is sometimes used to shrink large melanomas or to control symptoms when the cancer has spread. The number of radiotherapy sessions needed depends on the treatment goal and the area being treated. Some patients may have just one or a few sessions, while others may undergo treatment over several weeks.^[13]

Radiotherapy can cause side effects including skin redness, fatigue, and soreness in the treated area. These effects are usually temporary and improve after treatment ends. The benefit of radiotherapy is that it can reach areas that are difficult to treat with surgery and can provide symptom relief for patients with advanced disease.^[13]

Targeted medicines represent an important advancement in melanoma treatment. These drugs work by blocking specific genetic changes in cancer cells that help them grow and survive. Many superficial spreading melanomas carry a particular genetic mutation called BRAFV600E, which causes cells to divide uncontrollably. Before prescribing targeted therapy, doctors test a sample of the melanoma to identify which genetic changes are present.^[2]

Targeted drugs are typically given as pills taken daily. They are used for melanomas that cannot be removed with surgery, have spread to lymph nodes, or have traveled to other parts of the body. These medications can be very effective at shrinking tumors and controlling disease progression. However, they can cause side effects including fever, fatigue, rash, joint pain, and changes in liver function. Regular monitoring through blood tests is necessary to watch for these effects.^[13]

Immunotherapy is another type of treatment that helps the body’s own immune system recognize and attack melanoma cells. Cancer cells can sometimes hide from the immune system by using proteins that act like brakes, preventing immune cells from attacking. Immunotherapy drugs release these brakes, allowing the immune system to work more effectively against the cancer.^[13]

These treatments are given through intravenous infusion, usually every few weeks. Immunotherapy can produce long-lasting responses in some patients, meaning the cancer remains controlled for extended periods. However, because these drugs activate the immune system, they can cause side effects related to inflammation in various organs, including the intestines, lungs, liver, or glands that produce hormones. Patients receiving immunotherapy need careful monitoring to detect and manage these effects early.^[13]

Chemotherapy, which uses drugs to kill rapidly dividing cells throughout the body, is less commonly used for melanoma now because targeted therapies and immunotherapy often work better. However, chemotherapy may still be an option for some patients with advanced melanoma who cannot receive other treatments. It is typically given through an intravenous line in cycles, with periods of treatment followed by rest periods to allow the body to recover.^[13]

Chemotherapy side effects can include nausea, hair loss, fatigue, increased risk of infection, and changes in blood cell counts. These effects are usually temporary and improve after treatment ends.^[13]

Innovative Treatments Being Tested in Clinical Trials

Clinical trials are research studies that test new treatments or new combinations of existing treatments to find better ways to treat melanoma. These trials are carefully designed to protect patient safety while gathering information about whether a new approach works better than standard treatment. Trials typically proceed through three phases, each with a different purpose and involving increasing numbers of patients.^[15]

Phase I trials are the earliest stage of testing in humans. These studies primarily focus on safety, determining the appropriate dose of a new drug and identifying side effects. They usually involve small numbers of patients, often those whose melanoma has not responded to standard treatments. While the main goal is not to cure the disease at this stage, some patients may experience benefits from the experimental treatment.^[15]

Phase II trials expand the testing to a larger group of patients to learn more about how well the treatment works and to gather additional safety information. Researchers look at whether tumors shrink, whether the disease remains stable, and how long patients benefit from the treatment. These trials help determine which treatments should move forward to the next testing phase.^[15]

Phase III trials compare the new treatment directly with the current standard treatment to see if the new approach offers better outcomes. These are the largest trials, sometimes involving thousands of patients across many hospitals and countries. If a Phase III trial shows that a new treatment is more effective or has fewer side effects than standard treatment, it may be approved by regulatory agencies for general use.^[15]

Current clinical trials for melanoma are exploring several innovative approaches. Researchers are testing new immunotherapy combinations that use two or more drugs together to activate different parts of the immune system simultaneously. Early results from some studies suggest that certain combinations may work better than single drugs, though they can also cause more side effects.^[15]

Scientists are also developing new targeted therapies that block different molecular pathways involved in melanoma growth. Some of these experimental drugs target genetic changes other than BRAF mutations, potentially offering options for patients whose melanomas have different genetic profiles. Others aim to overcome the resistance that can develop when melanoma stops responding to existing targeted drugs.^[15]

Another area of active research involves personalized cancer vaccines. These experimental treatments are created specifically for each patient based on the unique characteristics of their melanoma. The vaccine is designed to teach the immune system to recognize and attack proteins found on the surface of the patient’s cancer cells. This approach is still in early testing but represents an exciting direction for future treatment.^[15]

Adoptive cell therapy is another innovative approach being studied. This technique involves removing immune cells from the patient’s blood, modifying them in the laboratory to make them better at recognizing melanoma, then infusing them back into the patient’s body. One type called CAR T-cell therapy, which has shown success in treating certain blood cancers, is now being adapted and tested for melanoma.^[15]

Clinical trials are conducted at many locations, including major cancer centers in the United States, Europe, Australia, and other regions. To participate in a trial, patients generally must meet specific eligibility criteria related to their disease stage, previous treatments, and overall health. The clinical team can help determine whether a patient is eligible for any available trials and explain the potential risks and benefits of participation.^[9]

Most Common Treatment Methods

• Surgery
  • Removal of melanoma with a margin of healthy skin around it to ensure all cancer cells are eliminated
  • Lymph node removal if melanoma shows signs of spreading beyond the original site
  • Skin grafting procedures when large areas of skin need to be removed and replaced
  • Plastic surgery techniques for melanomas in visible locations to optimize cosmetic outcomes
• Radiotherapy
  • High-energy radiation used to shrink large melanomas that cannot be completely removed surgically
  • Treatment to control symptoms and reduce disease burden in advanced cases
  • Sessions may range from single treatments to several weeks of therapy depending on treatment goals
• Targeted Therapy
  • Oral medications that block specific genetic mutations like BRAFV600E found in many melanomas
  • Used for melanomas that have spread to lymph nodes or distant organs
  • Requires genetic testing of tumor tissue before treatment to identify appropriate targets
• Immunotherapy
  • Intravenous drugs that release the immune system’s brakes, allowing it to attack cancer cells
  • Can produce long-lasting disease control in some patients with advanced melanoma
  • Given in cycles every few weeks with careful monitoring for immune-related side effects
• Chemotherapy
  • Systemic treatment using drugs that kill rapidly dividing cancer cells throughout the body
  • Less commonly used now but remains an option when other treatments are not suitable
  • Administered in cycles through intravenous infusion with rest periods in between