A case of carcinoma in situ of the lower lip successfully treated with shaving and photodynamic therapy. Issue 3 (7th December 2020) - Yu, Nianzhou; Shi, Wei; Chen, Mingliang; Su, Juan; Wu, Lisha; Huang, Kai; Liu, Dihui; Zhou, Qian; Lu, LiXia; Zhao, Shuang