Skin cancer - Symptoms and causes - Mayo Clinic
2022年12月6日 · Precancerous skin lesions. Having skin lesions known as actinic keratoses can increase your risk of developing skin cancer. These precancerous skin growths typically appear as rough, scaly patches that range in color from brown to dark pink.
Squamous cell carcinoma of the skin - Symptoms and causes
2023年8月11日 · Skin cancer that starts in the squamous cells is called squamous cell carcinoma of the skin. Melanoma, another type of skin cancer, comes from the pigment cells, called melanocytes. Squamous cell carcinoma of the skin occurs when the squamous cells in the skin get changes in their DNA.
Skin cancer - Diagnosis and treatment - Mayo Clinic
2022年12月6日 · Your treatment options for skin cancer and the precancerous skin lesions known as actinic keratoses will vary, depending on the size, type, depth and location of the lesions. Small skin cancers limited to the surface of the skin may not require treatment beyond an initial skin biopsy that removes the entire growth.
Melanoma - Symptoms and causes - Mayo Clinic
2023年12月30日 · Skin that sunburns easily. Anyone can get melanoma, but it's most common in people with white skin. If you have blond or red hair, light-colored eyes, and freckle or sunburn easily, you're more likely to develop melanoma.
Melanoma pictures to help identify skin cancer - Mayo Clinic
2023年12月16日 · Melanoma is a serious form of skin cancer. It often can be cured if found early. These melanoma pictures can help show you what to look for. The American Academy of Dermatology advises watching skin spots for: Asymmetry. Border irregularity. Color changes. Diameter greater than 1/4 inch (about 6 millimeters). Evolving.
Basal cell carcinoma - Symptoms & causes - Mayo Clinic
2021年10月1日 · Basal cell carcinoma is a type of skin cancer that most often develops on areas of skin exposed to the sun, such as the face. On brown and Black skin, basal cell carcinoma often looks like a bump that's brown or glossy black and has a rolled border.
Melanoma - Diagnosis and treatment - Mayo Clinic
2023年12月30日 · Look for signs of cancer beyond the skin. If there is concern that the melanoma has spread, imaging tests might be used to look for signs of cancer in other areas of the body. Tests might include X-ray, MRI , CT and positron emission tomography, which is …
Nonmelanoma skin cancer - Symptoms and causes - Mayo Clinic
2024年1月19日 · Nonmelanoma skin cancer refers to all the types of cancer that occur in the skin that are not melanoma. Several types of skin cancer fall within the broader category of nonmelanoma skin cancer, with the most common types being basal cell carcinoma and squamous cell carcinoma.
Seborrheic keratosis - Symptoms & causes - Mayo Clinic
2022年1月18日 · A seborrheic keratosis (seb-o-REE-ik ker-uh-TOE-sis) is a common noncancerous (benign) skin growth. People tend to get more of them as they get older. Seborrheic keratoses are usually brown, black or light tan. The growths (lesions) look waxy or scaly and slightly raised.
Mouth cancer - Symptoms and causes - Mayo Clinic
2024年4月30日 · Mouth cancers most commonly begin in the flat, thin cells (squamous cells) that line your lips and the inside of your mouth. Most oral cancers are squamous cell carcinomas. It's not clear what causes the mutations in squamous cells that lead to mouth cancer.