Skin cancer — abnormal skin cell growth most commonly occurs on skin that is exposed to the sun. But this common cancer form can also occur in areas of your skin that are not normally exposed to sunlight.
The uncontrolled growth of abnormal skin cells is skin cancer, it occurs when skin cells are damaged by unrepaired DNA (most frequently caused by sunshine ultraviolet radiation or tanning beds).
Triggers mutations or genetic defects leading to rapid multiplication of skin cells and the formation of malignant tumors.
Most skin cancers are cancerous (malignant) skin growth that is destructive locally. they come from the epidermis cells, the skin’s shallow layer.
The vast majority of these types of skin cancers, unlike cutaneous malignant melanoma, rarely spread to other parts of the body (metastasize) and become life threatening.
They can be new growths or precancerous lesions – changes that are not cancer but can eventually become cancer. At least one skin cancer will develop from an estimated 40% to 50% of fair skinned people who live to be 65.
The most common type of cancer is skin cancer, if they are found early, almost all skin cancers can be treated effectively, so it is important to know what to look for.
What are the risk factors for skin cancer?
- There are more skin cancers in older patients.
- Certain types of wart virus infections sexually acquired.
- Exposure to ionizing radiation (X-rays) or to cancer-prone chemicals such as arsenic.
- People with a history of one skin cancer have a 20 percent chance in the next two years of developing a second skin cancer.
- A chronically suppressed immune system (immunosuppression) from underlying diseases such as infection with HIV / AIDS or cancer, or some medicines such as prednisone or chemotherapy.
What causes skin cancer?
Except in rare cases, most skin cancers are caused by DNA mutations caused by ultraviolet light that affect epidermis cells.
Many of these early cancers appear to be controlled by natural immune surveillance, which can allow the development of masses of malignant cells beginning to grow into tumors when compromised.
Symptoms and warning signs.
The Skin Cancer Foundation, based in the United States, says that everyone should examine their entire body once a month, from head to toe, and note:
- Any new growths or moles.
- Grows or moles that have grown.
- Changing lesions, itching, bleeding or not healing.
- Moles or growths that have changed substantially differently.
What are Cancers of Basal and Squamous Cell Skin?
Cancer begins when the body’s cells start growing out of control, cells can become cancer cells in almost any part of the body. See What Is cancer to learn more about how cancers begin and spread?
Skin cancer begins when skin cells uncontrollably begin to grow.
Skin Cancer Types.
There are 3 main types of cells in the top layer of the skin (called the epidermis):
- Basal cells.
- Squamous cells.
These cells are called the basal cell layer in the lower part of the epidermis, these cells divide constantly into new cells to replace the squamous cells wearing off the surface of the skin. as these cells move up in the epidermis, they become flatter and squamous cells eventually become.
These cells make the brown pigment called melanin, giving the skin a bronze or brown color, melanin acts as the natural sunscreen of the body, protecting the skin’s deeper layers from some of the sun’s harmful effects.
For most people, melanocytes make more of the pigment when skin is exposed to the sun, causing the skin to tan or darken.
These are flat cells that are constantly shed as new ones in the outer part of the epidermis.
A doctor usually removes minor surgical basal cell and squamous cell cancers.
When a person is unable to undergo surgery, radiation therapy is an alternative treatment. This treatment may also be recommended by a doctor if the cancer is in a place that would make surgery difficult, such as eyelids, nose, or ears.
The best treatment for melanoma will depend on the cancer stage and location, if melanoma is diagnosed early by a doctor, it can usually be removed with minor surgery.