Model and actress Angie Everhart, 43, has been diagnosed with thyroid cancer and will undergo surgery Tuesday, her rep confirmed today to ABCNews.com. “Word has been trickling out about supermodel/actress Angie Everhart’s health,” her rep said in a statement. “She wants to set the record straight by letting everyone know that it is true that she has been diagnosed with thyroid cancer; however, the prognosis is very good.” …