Abstract
Merkel cell carcinoma (MCC) was first described by Toker in 1972 as trabecular carcinoma of the skin. It is also known as neuroendocrine carcinoma of the skin, cutaneous APUDoma, and primary small cell carcinoma of the skin with endocrine differentiation. Merkel cell carcinoma is an uncommon and aggressive non-melanoma cutaneous neoplasm. Friedrich Merkel first discovered the Merkel cell in 1875. It is a large, clear, usually round or oval cell found in the basal layer of the epidermis. It is found in close association with terminal axons and is joined to keratinocytes. They are found in highest concentrations in acral skin, namely, the fingertips and nasal tip, as well as glabrous skin, hairy skin, and mucous membranes. The function of Merkel cells is thought to be that of a slowly adapting mechanoreceptor. The origin of Merkel cell carcinoma is controversial as well. It may arise from epidermal Merkel cells, dermal neuroendocrine cells, or poorly differentiated epidermal stem cells.
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Campbell, K., Pustover, K., Morgan, M.B. (2016). Merkel Cell Carcinoma. In: Crowe, D., Morgan, M., Somach, S., Trapp, K. (eds) Deadly Dermatologic Diseases. Springer, Cham. https://doi.org/10.1007/978-3-319-31566-9_6
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DOI: https://doi.org/10.1007/978-3-319-31566-9_6
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