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The most critical warning sign of skin cancer is the appearance of a new spot on the skin or changes in an existing spot that seem abnormal. Following the A B C D E guidelines can help you identify the common signs of skin cancer:

• Asymmetry:One half of a mole (or birthmark) does not match the other half.
• Border:Edges are irregular, ragged, notched, or blurred.
• Color:The color is uneven, often featuring different shades of brown or black, along with patches of pink, red, white, or blue.
• Diameter:The spot is larger than 6 millimeters across (about the size of a pencil eraser).
• Evolving:The mole is changing in size, shape, color, or elevation. 

Skin cancer is typically identified first by a healthcare professional during an examination of an unusual area on the skin. However, determining whether it is cancerous requires removal and subsequent testing, known as a biopsy. This is the only reliable method to confirm a skin cancer diagnosis.

You may have your biopsy performed in a dermatologist’s office or as an outpatient procedure in a hospital or clinic, depending on the size and location of the abnormal area. Local anesthesia is usually administered to ensure your comfort.

There are four common types of skin biopsies:

• Punch Biopsy:A sharp, hollow tool is used to remove a circle of tissue from the abnormal area.
• Incisional Biopsy:A scalpel is employed to remove a portion of the growth.
• Excisional Biopsy:The entire growth and some surrounding tissue are removed with a scalpel.
• Shave Biopsy:A thin, sharp blade is used to shave off the abnormal growth.

If there is a possibility of melanoma, dermatologists will generally avoid simply shaving or cauterizing the growth. Instead, an excisional biopsy will be performed, or if the growth is too large, a tissue sample will be collected.

Upon receiving a biopsy confirmation of skin cancer, you will be referred to a specialized oncologist for further evaluation and care. Understanding the extent, or stage, of your cancer is crucial, whether you have melanoma or nonmelanoma skin cancer. Staging involves a meticulous assessment to determine how thick the tumor is and whether it has metastasized to other parts of the body. If the tumor is particularly thick, your doctor may recommend chest x-rays, blood tests, and imaging scans of the liver, bones, and brain.

Knowing the stage of your cancer enables your oncologist to:

• Assess the seriousness of your cancer and your chances for survival
• Formulate the most effective treatment plan for your unique situation
• Identify clinical trials that may present additional treatment options

In some cases, your oncologist may need to examine your lymph nodes to accurately stage the cancer. Surgical procedures may be part of the treatment plan to remove cancerous lymph nodes, which can aid in managing the disease.

Staging Criteria
Staging is based on several key factors:

• The size of the tumor
• How deeply it has penetrated below the surface of the skin
• Whether it has spread to nearby lymph nodes or other organs

Oncologists utilize Roman numerals I through IV to designate the cancer stage. Stage I indicates small tumors that are confined to their original site, while Stage IV signifies advanced cancer that has spread to distant sites in the body.

Nonmelanoma Skin Cancer Staging
The stages of nonmelanoma skin cancer are as follows:

• Stage 0: The cancer is localized to the top layer of skin, classified as carcinoma in situ.
• Stage I: The tumor measures 2 centimeters (approximately three-quarters of an inch) or smaller.
• Stage II: The tumor exceeds 2 centimeters in diameter.
• Stage III: The cancer has spread beyond the skin to underlying tissues such as cartilage, muscle, or bone, or to nearby lymph nodes, but not to distant locations.
• Stage IV: The cancer has metastasized to other areas in the body.

Melanoma Staging
The staging for melanoma specifically is defined as follows:

• Stage 0: Melanoma cells are confined to the outer layer of skin (epidermis) and have not invaded deeper tissues.
• Stage I: In Stage I, the melanoma is considered thin:
  • The tumor is no thicker than 1 millimeter (1/25 inch) and may show signs of ulceration (a scraped appearance).
  • Alternatively, the tumor measures between 1 and 2 millimeters thick without ulceration, and melanoma cells have not spread to nearby lymph nodes.
• Stage II: At this stage, the tumor is at least 1 millimeter thick:
  • It may be between 1 and 2 millimeters thick and present with ulceration.
  • Alternatively, the tumor may be greater than 2 millimeters thick, potentially with ulceration, but has not yet spread to nearby lymph nodes.
• Stage III: This indicates that melanoma has spread to nearby lymph nodes or to tissues just outside the original tumor without affecting the lymph nodes.
• Stage IV: At this advanced stage, melanoma cells have metastasized to other organs, lymph nodes, or distant skin areas.
• Recurrent: Recurrent disease indicates that cancer has returned after treatment, either in the original site or in a new location within the body.

There are various approaches to treating skin cancer, and your oncologist will work closely with you to determine the most effective combination of therapies based on the stage of cancer and your overall health. We at El Portal Comprehensive Cancer Centers are dedicated to providing you with comprehensive care tailored to your needs, ensuring you receive the support, guidance, and treatment necessary for your journey toward recovery.

Nonmelanoma Skin Cancer Treatments

In some cases, the entire nonmelanoma skin cancer may be removed during the biopsy, which means no further treatment is necessary. However, if additional treatment is required, your doctor will outline the available options.

There are six primary types of nonmelanoma skin cancer treatments, which may be used individually or in combination:

1. Surgery
2. Chemotherapy
3. Photodynamic therapy
4. Radiation therapy
5. Biologic therapy
6. Targeted therapy

Melanoma Skin Cancer Treatments

Melanoma treatment encompasses nearly all the same options as nonmelanoma skin cancer, with the exception of photodynamic therapy.

Skin Cancer Treatment Options

Your oncologist can provide detailed explanations of the following surgical techniques:

• Wide-Local Excision (WLE): This common approach involves numbing the area and surgically removing the cancer along with a margin of surrounding healthy skin. The margin is examined microscopically to ensure all cancer cells have been excised, and the required margin size will depend on the tumor’s dimensions. In some cases, nearby lymph nodes may also be removed.
• Mohs Surgery: This technique is particularly beneficial for skin cancer treatment. The surgeon numbs the area and removes thin layers of the tumor, examining each layer under a microscope for cancer cells. The process continues until no cancerous cells are detected, ensuring complete tumor removal while preserving as much healthy tissue as possible.
• Electrodesiccation and Curettage: This method is ideal for small basal cell skin cancers. The doctor numbs the area, removes the cancer using a curette (a spoon-shaped surgical instrument), and then employs an electric current to control bleeding and eliminate any remaining cancer cells. This procedure tends to be quick and straightforward.
• Cryosurgery: This option is suitable for patients who may not tolerate other surgical methods. Cryosurgery employs extreme cold, typically generated from liquid nitrogen, to treat early-stage or very thin skin cancer lesions. While effective, this approach may cause swelling and could damage nerves in the area, leading to temporary loss of sensation.
• Laser Surgery: This technique involves using a focused beam of light to target and destroy cancer cells. It is primarily utilized for superficial growths confined to the outer layer of skin.
• Skin Grafting: Occasionally, grafts are necessary to cover openings left by surgical removal. In this procedure, the surgeon numbs the area and removes a patch of healthy skin from another part of your body, such as the thigh, to cover the excised area. It is important to provide special care to the graft site during the healing process.
• Lymphadenectomy: This surgical procedure may be employed in the case of melanoma, wherein lymph nodes are removed for evaluation. The removed tissue is examined under a microscope for cancer cells.
• Sentinel Lymph Node Biopsy: During this procedure, the sentinel lymph node—the first node likely to receive cancer spread from the tumor—is surgically removed. A radioactive substance and/or blue dye is injected near the tumor site to track the flow to the lymph nodes. If no cancer cells are found in the sentinel node, additional nodes may not need to be excised, making this a useful technique within melanoma treatment plans.