Oncology & Cancer

Q&A: Merkel cell carcinoma

I recently heard about a type of skin cancer called Merkel cell carcinoma. I'm not familiar with this condition. Can you explain what it is? Do I need to do anything different to protect myself?

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Carcinoma

A carcinoma is any malignant cancer that arises from epithelial cells. Carcinomas invade surrounding tissues and organs and may metastasize, or spread, to lymph nodes and other sites.

Carcinoma in situ (CIS) is a pre-malignant condition, in which some cytological signs of malignancy are present, but there is no histological evidence of invasion through the epithelial basement membrane.

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