What is Merkel Cell Carcinoma?
Merkel cell carcinoma is a type of skin cancer that starts in cells called Merkel cells. Merkel cells can be found deep in the epidermis, which is the outermost layer of skin. Merkel cells are located very close to nerve endings in the skin, and function as light touch receptors. When we touch an object, these cells help us recognize features such as the shape, texture, and temperature of an object. These cells also detect pressure, which helps us pick up and hold objects.
Click Image to Enlarge.
Merkel cell carcinoma is a very rare form of skin cancer that affects only about 1,500 Americans each year. However, it is also highly aggressive, and tends to grow quickly and metastasize (spread) early. Merkel cell carcinoma often spreads outside of the skin before it is diagnosed. Merkel cell carcinoma usually appears as a skin-colored, reddish, or bluish lump or nodule. It grows rapidly and often occurs on sun-exposed areas of skin.
