What area or layer of the skin is affected by BCC?
One of three main types of cells in the top layer of the skin, basal cells shed as new ones form. BCC most often occurs when DNA damage from exposure to ultraviolet (UV) radiation from the sun or indoor tanning triggers changes in basal cells in the outermost layer of skin (epidermis), resulting in uncontrolled growth.
What layers of skin does skin cancer affect?
Skin cancer is the out-of-control growth of abnormal cells in the epidermis, the outermost skin layer, caused by unrepaired DNA damage that triggers mutations. These mutations lead the skin cells to multiply rapidly and form malignant tumors.
What tissues cell types are affected by basal cell carcinoma?
Basal cell carcinoma. This type develops in cells in the deepest layer of the epithelium, called basal cells. Squamous cell carcinoma. This type develops in cells in the top layer of the epithelium, called squamous cells.
Can basal cell carcinoma spread under skin?
This cancer is unlikely to spread from your skin to other parts of your body, but it can move nearby into bone or other tissue under your skin.
What happens if basal cell goes untreated?
This type of skin cancer needs to be treated and has a high cure rate. If left untreated, basal cell carcinomas can become quite large, cause disfigurement, and in rare cases, spread to other parts of the body and cause death. Your skin covers your body and protects it from the environment.
Which cancers account for 90% of all skin cancers?
Basal cell carcinoma accounts for more than 90 percent of all skin cancers in the United States and is the most common of all cancers.
What are the 4 signs of skin cancer?
How to Spot Skin Cancer
- Asymmetry. One part of a mole or birthmark doesn’t match the other.
- Border. The edges are irregular, ragged, notched, or blurred.
- Color. The color is not the same all over and may include shades of brown or black, sometimes with patches of pink, red, white, or blue.
- Diameter. …
Which skin cancer grows fastest?
Merkel cell carcinoma tends to grow fast and to spread quickly to other parts of your body. Treatment options for Merkel cell carcinoma often depend on whether the cancer has spread beyond the skin.
What are the 4 types of skin cancer?
There are 4 main types of skin cancer:
- Basal cell carcinoma. Basal cells are the round cells found in the lower epidermis. …
- Squamous cell carcinoma. Most of the epidermis is made up of flat, scale-like cells called squamous cells. …
- Merkel cell cancer. …
Why do I keep getting basal cell carcinomas?
Most basal cell and squamous cell skin cancers are caused by repeated and unprotected skin exposure to ultraviolet (UV) rays from sunlight, as well as from man-made sources such as tanning beds. UV rays can damage the DNA inside skin cells.
What happens to the skin in basal cell carcinoma?
Basal cell carcinoma appears as a change in the skin, such as a growth or a sore that won’t heal. These changes in the skin (lesions) usually have one of the following characteristics: A pearly white, skin-colored or pink bump that is translucent, meaning you can see a bit through the surface.
How fast does basal cell carcinomas grow?
The tumors enlarge very slowly, sometimes so slowly that they go unnoticed as new growths. However, the growth rate varies greatly from tumor to tumor, with some growing as much as ½ inch (about 1 centimeter) in a year. Basal cell carcinomas rarely spread (metastasize) to other parts of the body.