Basal cell carcinomas are currently considered to have origin from the folliculo-sebaceous-apocrine germ, also known as trichoblast. The differential diagnosis with trichoblastic carcinoma, a rare malignant form of trichoblastoma, can be challenging. Alternatively, one argument is that basal cell carcinoma is trichoblastic carcinoma. Overexposure to sun leads to the formation of thymine dimers, a form of DNA damage.
Carson, Washington. Carson is a small community within Carson River Valley CDP in Skamania County in the southwestern part of the U.S. state of Washington.
West Carson, California. West Carson is a census-designated place (CDP) in Los Angeles County, California. The population was 21,699 at the 2010 census, up from 21,138 at the 2000 census. The ZIP Codes encompassing the CDP area are 90502 and 90710.