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.
Duvall is a city in King County, Washington, United States, located on SR 203, halfway between Monroe and Carnation. The population was 6,695 at the 2010 census. The area that became known as Duvall was historically the home of the Snoqualmie and other ancestral Tulalip Native American tribes.