AIN Grade 1, 2, 3 Symptoms, Causes, Treatment
Anal Intraepithelial Neoplasia (AIN) is a precancerous skin change in the perineal region caused by HPV (human papillomavirus) exposure. Anal intraepithelial neoplasia (AIN) refers to the premalignant dysplasia of the anal epithelium, which is caused by infection with the human papillomavirus (HPV). It takes the form of anal cancer over time, necessitating chemo-radiation and maybe...