About 8 out of 10 skin cancers are basal cell carcinomas (also called basal cell cancers). These cancers start in the basal cell layer, which is the lower part of the epidermis. These cancers usually develop on sun-exposed areas, especially the face, head, and neck. They tend to grow slowly.
Where is basal cell carcinoma most commonly found on the body?
Basal cell carcinoma often appears as a slightly transparent bump on the skin, though it can take other forms. Basal cell carcinoma occurs most often on areas of the skin that are exposed to the sun, such as your head and neck.
In which layer of the skin does skin cancer normally start?
Most skin cancers start in the top layer of skin, called the epidermis. There are 3 main types of cells in this layer: Squamous cells: These are flat cells in the upper (outer) part of the epidermis, which are constantly shed as new ones form.
What part of the integumentary system is affect by basal cell carcinoma?
Basal cell carcinoma is a form of cancer that affects the mitotically active stem cells in the stratum basale of the epidermis.
What layer of skin does squamous cell carcinoma occur?
Squamous cell skin cancer affects the epidermis, the top layer of skin. Squamous cell cancer may occur in undamaged skin. It can also occur in skin that has been injured or inflamed. Most squamous cell cancers occur on skin that is regularly exposed to sunlight or other ultraviolet radiation.
What layer of skin does melanoma occur?
Melanoma starts in cells in the skin called melanocytes. These cells are in the deep layer of the epidermis between the layer of basal cells.
What is the basal layer of the epidermis?
The basal layer is the innermost layer of the epidermis, and contains small round cells called basal cells. … The basal cell layer is also known as the stratum germinativum due to the fact that it is constantly germinating (producing) new cells. The basal cell layer contains cells called melanocytes.
Which layer of skin is the outer most layer and contains dead cells that are filled with keratin?
The stratum corneum, which is the outermost epidermal layer, consists of dead cells and is the major barrier to chemical transfer through the skin. Although nonpolar chemicals cross the skin by diffusion through the stratum corneum, no active transport exists in the dead cells of this…
How do I know if I have basal cell or squamous cell carcinoma?
Basal cell carcinoma most commonly appears as a pearly white, dome-shaped papule with prominent telangiectatic surface vessels. Squamous cell carcinoma most commonly appears as a firm, smooth, or hyperkeratotic papule or plaque, often with central ulceration.
At which layer does basal cell carcinoma occur at what layer does squamous cell carcinoma occur what cell type is involved in melanoma?
The bottom layer of the epidermis is the basal cell layer. With basal cancer, cells in this layer are the ones that become cancerous. Most basal cell cancers occur on skin that is regularly exposed to sunlight or other ultraviolet radiation. This type of skin cancer is most common in people over age 50.
Which layer of the epidermis contains cells that may potentially form a squamous cell carcinoma?
There are 3 main types of cells in this layer: Squamous cells: These are flat cells in the upper (outer) part of the epidermis, which are constantly shed as new ones form. When these cells grow out of control, they can develop into squamous cell skin cancer (also called squamous cell carcinoma).
What is the outermost layer of skin?
Your epidermis is the outermost layer of skin on your body.