Squamous cell carcinoma is a cancer that affects the keratinocytes of the stratum spinosum and presents as lesions commonly found on the scalp, ears, and hands (Figure 2). It is the second most common skin cancer.
What skin cancer arises from stratum spinosum cells?
Squamous Cell carcinoma—arises from the keratinocytes in the stratum spinosum.
What layer of skin is melanoma in?
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 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 the epidermis does skin cancer occur?
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.
What is Stratum Spinosum?
The stratum spinosum is the layer above the stratum basalis and is typically five to ten cell layers thick. Keratinocytes adhere to each other by desmosomes.
What type of skin cancer starts in the melanocytes quizlet?
Melanoma is a cancer that begins in the melanocytes.
What layer does melanoma stratum start?
The deepest layer of the epidermis, located just above the dermis, contains cells called melanocytes. Melanocytes produce the skin’s pigment or color. Melanoma begins when healthy melanocytes change and grow out of control, forming a cancerous tumor.
Which of these is not an appendage of the skin?
Sweat glands, hair, nails and sebaceous glands are all considered epidermal appendages. The hypodermis is not considered an epidermal appendage. The hypodermis is the loose connective tissue layer underneath the dermis.
What is the malignancy of the lowest epidermal layer?
Basal cell carcinoma (also called basal cell skin cancer) is most common type of skin cancer. 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.
Does squamous cell carcinomas arise from the stratum corneum?
Skin cancer is a result of damage to the DNA of skin cells, often due to excessive exposure to UV radiation. Basal cell carcinoma and squamous cell carcinoma are highly curable, and arise from cells in the stratum basale and stratum spinosum, respectively.
Where does squamous cell occur?
One of three main types of cells in the top layer of the skin (the epidermis), squamous cells are flat cells located near the surface of the skin that shed continuously as new ones form.
What is basal cell carcinoma stratum basale?
Basal cell carcinoma is a form of cancer that affects the mitotically active stem cells in the stratum basale of the epidermis.