@nicholas21 I believe that is called a Merkel Cell Carcinoma, if it is a neuroendocrine skin cancer. I have attached two links below. The first is a link to Mayo's website for information on Merkel Cell Carcinomas. The second link is a link from a previous discussion on Merkel Cell. Please let me know, if you find them helpful. Thanks.
https://www.mayoclinic.org/diseases-conditions/merkel-cell-carcinoma/symptoms-causes/syc-20351030
https://connect.mayoclinic.org/discussion/merkel-cell-carcinoma-1/