“…CA skin lesions are mainly manifested as skin mucosal vegetations, which are variable in size and shape and often occur in the anus, external genitalia and other parts, with the characteristics of recurrent attacks (2). According to statistics, the risk of developing HPV infection in sexually active people is as high as 80%, and the incidence of CA is about 0.13-0.56% (3). The global prevalence of CA is approximately 160/100,000 to 289/100,000, showing an increasing trend in recent years (4).…”