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.
Carson County, Texas. Carson County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 6,182. The county seat is Panhandle. The county was founded in 1876 and later organized in 1888. It is named for Samuel Price Carson, the first secretary of state of the Republic of Texas.