Merkel Cells are found in the top layer of the skin. These cells are very close to nerve endings.
Merkel Cell Carcinoma
Also called neuroendocrine carcinoma of the skin
or trabecular cancer
is a very rare type of skin cancer that forms when Merkel cells grow
out of control. Merkel cell carcinoma starts most often in areas of skin
exposed to the sun, especially the head and neck, as well as the arms,
legs, and trunk. Merkel cell carcinoma tends to grow quickly and to metastasize (spread). It usually spreads first to nearby lymph nodes and then may spread to lymph nodes or skin in distant parts of the body, lungs, brain, bones, or other organs.