Squamous cell carcinoma of skin – Treatment

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When skin cancer called squamous cell carcinoma is diagnosed, the journey to recovery begins with choosing the right path forward. The options today range from time-tested surgical methods to innovative therapies being tested in research settings, all aimed at removing the cancer and helping patients return to health.

Choosing the Right Path for Healing Your Skin

Squamous cell carcinoma is the second most common form of skin cancer, affecting over one million people in the United States each year. The disease develops when cells in the outermost layer of skin, called squamous cells, begin to grow out of control. This uncontrolled growth is most often triggered by years of exposure to ultraviolet radiation from the sun or tanning beds, which damages the genetic material inside skin cells[1].

The good news is that when caught early, squamous cell carcinoma is highly treatable. The primary goal of treatment is to completely remove the cancer from the body. Depending on how deep the cancer has grown, where it is located on the body, and the overall health of the patient, doctors may recommend different approaches. Some treatments work best for small, shallow cancers that have not spread, while more aggressive cancers may need more intensive intervention[6].

Treatment decisions are not made in isolation. Medical teams consider many factors, including the size and depth of the tumor, whether it has spread to lymph nodes or other parts of the body, the patient’s age, and any other health conditions that might affect healing. The stage of the disease plays a crucial role in determining the best course of action. Early-stage cancers confined to the top layer of skin can often be removed with simple procedures, while more advanced cases may require a combination of treatments[4].

⚠️ Important
If you have been diagnosed with squamous cell carcinoma, prompt treatment is essential. While most cases are curable when detected early, delaying treatment can allow the cancer to grow deeper into the skin or spread to other parts of the body, making it harder to treat and potentially life-threatening[3].

Standard Treatment Approaches

The foundation of squamous cell carcinoma treatment is surgical removal of the cancer. Most cases can be successfully treated with minor surgical procedures that can be performed in an outpatient setting, meaning patients can go home the same day. The choice of surgical method depends on the characteristics of the tumor and its location on the body[6].

Surgical Excision

Standard surgical excision is one of the most common treatments for squamous cell carcinoma. During this procedure, the surgeon uses a scalpel to cut out the entire tumor along with a margin of healthy-looking skin around it. This margin acts as a safety buffer to ensure that all cancer cells are removed. The typical margin removed depends on the thickness and location of the tumor. After the tissue is removed, it is sent to a laboratory where specialists examine it under a microscope to confirm that the edges are free of cancer cells[8].

If cancer cells are found at the edges of the removed tissue, the patient may need to return for additional surgery to remove more tissue. This method offers high cure rates for early-stage squamous cell carcinoma and is particularly effective for small, easily accessible tumors. The procedure is relatively quick and straightforward, though it does leave a scar at the surgical site[8].

Mohs Micrographic Surgery

Mohs surgery is considered the gold standard for treating squamous cell carcinoma, especially when the cancer appears on cosmetically sensitive areas such as the face, ears, neck, or hands. This specialized technique was designed to maximize the amount of healthy tissue preserved while ensuring complete cancer removal[8].

The Mohs procedure is performed in stages during a single visit. The surgeon removes the visible tumor and a very thin layer of surrounding tissue. This tissue is immediately examined under a microscope while the patient waits. If cancer cells are detected at the edges, the surgeon removes another thin layer only from the area where cancer was found. This process continues layer by layer until no cancer cells remain. Because the surgeon examines tissue in real time and removes only the minimum amount necessary, Mohs surgery offers the highest cure rates while minimizing scarring[8].

This technique is especially valuable for aggressive or recurrent squamous cell carcinomas, as well as for tumors in critical areas where preserving normal tissue is important for function and appearance. However, Mohs surgery requires specialized training, so it is essential to seek care from a board-certified Mohs surgeon[13].

Curettage and Electrodesiccation

For small or superficial squamous cell carcinomas, doctors may use a technique called curettage and electrodesiccation. This procedure involves two steps. First, the surgeon uses a tool called a curette to scrape away the tumor from the skin surface. Then, an electric needle is used to burn and destroy any remaining cancer cells at the base of the removed tissue[6].

This method is quick and minimally invasive, making it suitable for small, non-aggressive tumors. However, it has a higher risk of cancer recurrence compared to surgical excision or Mohs surgery, so it is typically reserved for cases where the cancer is very small and has a low risk of spreading[13].

Cryosurgery

Cryosurgery, also known as cryotherapy, uses extreme cold to freeze and destroy cancer cells. During this procedure, liquid nitrogen is applied directly to the tumor, causing the cancer cells to freeze and die. Over time, the frozen tissue falls off and healthy skin grows back[6].

This treatment is best suited for very small, superficial squamous cell carcinomas that have not grown deep into the skin. It is a relatively quick procedure with minimal discomfort. However, like curettage and electrodesiccation, cryosurgery carries a higher risk of recurrence compared to more definitive surgical methods[8].

Laser Therapy

Laser therapy uses an intense beam of focused light to destroy cancerous growths. This treatment option is particularly useful for very small or superficial skin cancers. The laser can precisely target cancer cells while causing minimal damage to surrounding healthy tissue. Benefits include reduced risk of bleeding, swelling, and scarring compared to traditional surgery[6].

Radiation Therapy

Radiation therapy may be recommended for patients who cannot undergo surgery due to advanced age, other health conditions, or because the tumor is located in a hard-to-reach area. This non-invasive treatment uses high-energy X-rays or other types of radiation to kill cancer cells[6].

Radiation therapy is typically given in multiple sessions over several weeks. Each treatment session is relatively short and painless. While radiation does not require recovery time like surgery, it can cause side effects such as skin irritation, redness, and fatigue. Some patients may experience long-term changes in skin color or texture in the treated area. Radiation therapy is also used after surgery in cases where the cancer has spread to lymph nodes or when there is concern that not all cancer cells were removed[14].

Topical Medications

For very small, superficial squamous cell carcinomas that are confined to the outermost layer of skin, topical medications may be an option. These are creams or gels that contain cancer-fighting drugs applied directly to the skin. The medication works by killing cancer cells over the course of several hours or days[6].

Topical treatments are less invasive than surgery, but they are only appropriate for specific types of early-stage skin cancer. They also tend to have higher recurrence rates compared to surgical methods. Patients using topical medications may experience skin irritation, redness, and inflammation at the application site[8].

Photodynamic Therapy

Photodynamic therapy is a treatment that combines a special light-sensitive medication with specific wavelengths of light to destroy cancer cells. A gel or cream containing the medication is applied to the affected area. This medication is absorbed preferentially by cancer cells, making them extremely sensitive to certain types of light. After a waiting period, the area is exposed to the specific light, which activates the medication and destroys the cancer cells[14].

This method is commonly used for precancerous lesions called actinic keratosis, which can develop into squamous cell carcinoma if left untreated. It may also be used for very early, superficial skin cancers. One advantage of photodynamic therapy is that it can treat multiple areas at once and typically results in good cosmetic outcomes[8].

Treatment in Clinical Trials

While surgery remains the cornerstone of squamous cell carcinoma treatment, researchers are continuously working to develop new therapeutic approaches, particularly for advanced cases where the cancer has spread to other parts of the body. Clinical trials offer patients access to cutting-edge treatments that are not yet widely available[4].

Immunotherapy for Advanced Disease

One of the most promising areas of research for squamous cell carcinoma is immunotherapy, a type of treatment that harnesses the power of the patient’s own immune system to fight cancer. Unlike chemotherapy, which directly kills cancer cells, immunotherapy works by helping the immune system recognize and attack cancer cells more effectively[14].

Several immunotherapy drugs are being tested in clinical trials for patients with advanced or metastatic squamous cell carcinoma. These drugs work by blocking proteins that prevent immune cells from attacking cancer. By removing these blocks, the immune system becomes more active against the cancer. Early results from clinical trials have shown that some patients with advanced disease experience significant tumor shrinkage and improved survival when treated with these medications[14].

Immunotherapy trials are typically offered to patients whose cancer has spread to lymph nodes or other organs, or those whose cancer has returned after initial treatment. These studies are conducted in phases. Phase I trials test the safety of new treatments in small groups of patients. Phase II trials evaluate whether the treatment is effective and continue to monitor safety. Phase III trials compare new treatments to standard therapies to determine which approach works better[4].

Targeted Therapy Research

Another avenue of research involves targeted therapy, which uses drugs designed to attack specific molecular changes in cancer cells. Scientists have identified certain genetic mutations and molecular pathways that contribute to squamous cell carcinoma growth. Targeted therapies are designed to block these specific pathways, potentially stopping cancer growth while causing less damage to normal cells than traditional chemotherapy[14].

Clinical trials are testing various targeted therapy drugs, including those that interfere with proteins involved in cell division and survival. Some studies focus on inhibiting enzymes that cancer cells need to grow and spread. These trials typically enroll patients with advanced disease who have not responded to other treatments or whose cancer has returned after initial therapy.

Combination Treatment Approaches

Some clinical trials are exploring whether combining different types of treatments can improve outcomes for patients with advanced squamous cell carcinoma. For example, researchers are testing combinations of immunotherapy drugs, or pairing immunotherapy with radiation therapy or targeted drugs. The goal is to attack cancer cells through multiple mechanisms simultaneously, potentially achieving better results than any single treatment alone[14].

Participation in Clinical Trials

Clinical trials are conducted at major cancer centers and research institutions throughout the world, including locations in the United States, Europe, and other regions. Patients interested in participating in a clinical trial must meet specific eligibility criteria, which typically depend on the stage and characteristics of their cancer, previous treatments received, and overall health status[4].

Participating in a clinical trial gives patients access to new treatments before they become widely available. All clinical trials are carefully monitored to protect patient safety, and participants are closely followed by medical teams. However, participation also involves uncertainty, as new treatments may have unknown side effects or may not work as well as hoped.

Most Common Treatment Methods

  • Surgical Removal
    • Standard excision with scalpel to remove tumor and surrounding margin of healthy tissue
    • Mohs micrographic surgery with layer-by-layer removal and immediate microscopic examination
    • Curettage and electrodesiccation to scrape away tumor and burn remaining cancer cells
  • Tissue Destruction Techniques
    • Cryosurgery using liquid nitrogen to freeze and destroy cancer cells
    • Laser therapy using focused light beams to destroy small cancerous growths
    • Electrodesiccation using electric needles to burn away cancer tissue
  • Radiation Treatment
    • High-energy X-rays delivered over multiple sessions to kill cancer cells
    • Used for patients unable to undergo surgery or as additional treatment after surgery
    • May be used to treat cancer that has spread to lymph nodes
  • Topical and Light-Based Therapies
    • Topical chemotherapy creams applied directly to very small, superficial cancers
    • Photodynamic therapy combining light-sensitive medication with specific light wavelengths
    • Immune response modifiers in cream form to stimulate local immune response
  • Immunotherapy
    • Medications that help the immune system recognize and attack cancer cells
    • Being tested in clinical trials for advanced or metastatic disease
    • May be used when cancer has spread or returned after initial treatment

Life After Treatment and Follow-Up Care

Successfully treating squamous cell carcinoma is an important milestone, but the journey does not end when treatment is complete. People who have had squamous cell carcinoma face an increased risk of developing another skin cancer in the future. This risk makes regular follow-up care and ongoing skin protection essential components of long-term health[16].

After treatment, patients should have regular check-ups with their dermatologist or skin cancer specialist. The frequency of these visits depends on the stage and characteristics of the original cancer, but many doctors recommend examinations every three to six months for the first few years, then annually thereafter. During these visits, the doctor examines the treatment site for any signs of recurrence and checks the entire body for new skin cancers[15].

Patients should also perform monthly self-examinations at home to monitor their skin for changes. This involves checking all areas of the body, including hard-to-see places like the scalp, back, and soles of the feet. Any new growths, sores that do not heal, or changes in existing spots should be reported to a doctor promptly. Early detection of recurrent or new skin cancers leads to better treatment outcomes[16].

Sun Protection as Prevention

Because ultraviolet radiation is the primary cause of squamous cell carcinoma, protecting the skin from sun exposure is crucial for preventing future skin cancers. This means making sun protection a daily habit, not just during beach vacations or summer months. Ultraviolet rays can damage skin even on cloudy days and can reflect off surfaces like water, sand, concrete, and snow[21].

Effective sun protection involves multiple strategies. Seeking shade during peak sun hours, typically between 10 a.m. and 3 p.m., reduces exposure to the strongest ultraviolet radiation. Wearing protective clothing, including long-sleeved shirts, long pants, and wide-brimmed hats, provides physical barriers against sun damage. The fabric should be tightly woven and dark-colored for maximum protection[19].

Sunscreen is an important part of sun protection, but it should be used in combination with other protective measures, not as the only defense. Broad-spectrum sunscreens with a sun protection factor of at least 30 should be applied generously to all exposed skin, including often-forgotten areas like the ears, neck, hands, and lips. Sunscreen should be reapplied every two hours, or more frequently if swimming or sweating. Even water-resistant products need regular reapplication[21].

Ultraviolet-protective sunglasses shield the delicate skin around the eyes and protect the eyes themselves from sun damage. Tanning beds should be completely avoided, as they emit harmful ultraviolet radiation that increases skin cancer risk[19].

⚠️ Important
While sun protection is essential, some sun exposure is needed for vitamin D production. The body needs vitamin D to maintain strong bones and muscles. During winter months, people in areas with limited sunlight may need vitamin D supplements. Talk to your doctor about whether supplementation is right for you, especially if you are avoiding sun exposure to protect your skin[16].

Supporting Loved Ones Through Treatment

A cancer diagnosis affects not only patients but also their family members and friends. Loved ones can provide invaluable support during treatment and recovery. Simple gestures like accompanying the patient to medical appointments, helping with daily tasks, or just being present to listen can make a significant difference in the patient’s emotional well-being[17].

Caregivers should also take care of their own physical and emotional health. Supporting someone through cancer treatment can be emotionally taxing, and caregivers need to set boundaries and take breaks to avoid burnout. Connecting with support groups, either in person or online, can help both patients and caregivers find community and understanding with others facing similar challenges[17].

Ongoing Clinical Trials on Squamous cell carcinoma of skin

  • Study on Cemiplimab for Patients with High-Risk Stage III/IV Cutaneous Squamous Cell Carcinoma

    Recruiting

    1 1 1
    Investigated diseases:
    Investigated drugs:
    Italy
  • Study of Nivolumab and Nivolumab Plus Relatlimab for Patients with Advanced or Metastatic Skin Squamous Cell Carcinoma

    Recruiting

    1 1 1
    Investigated diseases:
    Investigated drugs:
    Austria
  • A study of cemiplimab in patients with locally advanced cutaneous squamous cell carcinoma

    Not yet recruiting

    1 1 1
    Investigated diseases:
    Investigated drugs:
    Spain
  • Study of L19IL2 and L19TNF for Patients with Advanced Basal Cell Carcinoma or Cutaneous Squamous Cell Carcinoma Not Eligible for Surgery or Radiation

    Not recruiting

    1 1
    Germany Poland
  • Study of Cemiplimab Compared to Placebo After Surgery and Radiation for Patients with High-Risk Skin Squamous Cell Carcinoma

    Not recruiting

    1 1 1
    Investigated diseases:
    Investigated drugs:
    Belgium France Germany Greece Ireland Italy +2

References

https://my.clevelandclinic.org/health/diseases/17480-squamous-cell-carcinoma

https://www.skincancer.org/skin-cancer-information/squamous-cell-carcinoma/

https://www.healthdirect.gov.au/squamous-cell-carcinoma

https://www.ncbi.nlm.nih.gov/books/NBK441939/

https://www.cancer.org/cancer/types/basal-and-squamous-cell-skin-cancer/about/what-is-basal-and-squamous-cell.html

https://www.mayoclinic.org/diseases-conditions/squamous-cell-carcinoma/diagnosis-treatment/drc-20352486

https://www.mayoclinic.org/diseases-conditions/squamous-cell-carcinoma/diagnosis-treatment/drc-20352486

https://www.skincancer.org/skin-cancer-information/squamous-cell-carcinoma/scc-treatment-options/

https://my.clevelandclinic.org/health/diseases/17480-squamous-cell-carcinoma

https://www.mskcc.org/cancer-care/types/squamous-cell-carcinoma/treatment-squamous-cell-carcinoma

https://www.cancer.org/cancer/types/basal-and-squamous-cell-skin-cancer/treating/squamousl-cell-carcinoma.html

https://pmc.ncbi.nlm.nih.gov/articles/PMC6652228/

https://www.miamidermcenter.com/2025/05/16/choosing-the-best-squamous-cell-skin-cancer-treatment/

https://winshipcancer.emory.edu/cancer-types-and-treatments/skin-cancer/treatment.php

https://www.aad.org/public/diseases/skin-cancer/types/common/scc/self-care

https://www.cancerresearchuk.org/about-cancer/skin-cancer/living-with/skin-care-after-skin-cancer

https://www.miamidermcenter.com/2023/11/03/supporting-loved-ones-navigating-the-journey-with-squamous-cell-carcinoma-together/

https://www.mayoclinic.org/diseases-conditions/squamous-cell-carcinoma/diagnosis-treatment/drc-20352486

https://www.cancer.org/cancer/types/basal-and-squamous-cell-skin-cancer/causes-risks-prevention/prevention.html

https://metropolisdermatology.com/safe-skincare-after-skin-cancer-treatment-tips-for-protecting-your-skins-beauty/

https://www.ucsfhealth.org/education/skin-cancer-prevention

https://www.drtrevanfischer.com/blog/4-lifestyle-habits-for-preventing-skin-cancer

https://medlineplus.gov/diagnostictests.html

https://www.questdiagnostics.com/

https://www.healthdirect.gov.au/diagnostic-tests

https://www.who.int/health-topics/diagnostics

https://www.yalemedicine.org/clinical-keywords/diagnostic-testsprocedures

https://www.nibib.nih.gov/science-education/science-topics/rapid-diagnostics

https://www.health.harvard.edu/diagnostic-tests-and-medical-procedures

https://www.roche.com/stories/terminology-in-diagnostics

FAQ

What is the difference between squamous cell carcinoma and basal cell carcinoma?

Squamous cell carcinoma is the second most common type of skin cancer after basal cell carcinoma. Both develop in the outer layer of skin, but they arise from different types of cells. Squamous cell carcinoma begins in flat squamous cells near the skin surface, while basal cell carcinoma starts in round basal cells at the bottom of the epidermis. Squamous cell carcinoma has a higher risk of spreading to other parts of the body compared to basal cell carcinoma[1].

Will I need surgery if I have squamous cell carcinoma?

Most squamous cell carcinomas can be removed with minor surgery performed on an outpatient basis. The type of procedure depends on the size, location, and depth of the cancer. Very small, superficial cancers may be treated with non-surgical methods like cryotherapy, laser therapy, or topical medications. However, surgery offers the highest cure rates and is the most common treatment approach[6].

How often should I have skin checks after treatment?

After treatment for squamous cell carcinoma, regular follow-up examinations are important because people who have had one skin cancer are at increased risk for developing additional skin cancers. Many doctors recommend check-ups every three to six months for the first few years, then annually. You should also perform monthly self-examinations at home and report any concerning changes to your doctor immediately[15].

Can squamous cell carcinoma come back after treatment?

While most early-stage squamous cell carcinomas are cured with treatment, there is a possibility of recurrence, particularly with larger or deeper tumors. The risk of recurrence is lower with complete surgical removal, especially with techniques like Mohs surgery. Regular follow-up care and skin monitoring help detect any recurrence early when it is most treatable[3].

What are clinical trials and should I consider participating?

Clinical trials are research studies that test new treatments or combinations of treatments. They are typically offered to patients with advanced disease that has not responded to standard treatments. Participating in a clinical trial gives you access to cutting-edge therapies before they become widely available, though new treatments may have unknown risks. Your doctor can help you determine if a clinical trial might be appropriate for your situation[4].

🎯 Key Takeaways

  • Over one million people in the United States are diagnosed with squamous cell carcinoma each year, making it the second most common form of skin cancer
  • When caught early, squamous cell carcinoma is highly curable with surgery, and most cases can be treated on an outpatient basis
  • Mohs surgery offers the highest cure rates and best cosmetic outcomes for squamous cell carcinoma, especially on the face and other visible areas
  • New immunotherapy treatments are being tested in clinical trials for patients with advanced disease that has spread beyond the skin
  • People who have had squamous cell carcinoma face increased risk for developing additional skin cancers and need regular follow-up examinations
  • Daily sun protection with sunscreen, protective clothing, and shade-seeking is essential for preventing future skin cancers
  • Monthly self-examinations help detect skin changes early, when treatment is most successful
  • The rate of squamous cell carcinoma has increased by 200% over the past three decades, highlighting the importance of prevention and early detection