<unk>  is a pre-cancerous condition which occurs when the lining of the anal canal undergoes abnormal changes. It can be classified as low grade squamous intraepithelial lesions (LSIL) and high-grade squamous intraepithelial lesions (HSIL). Most cases are not associated with symptoms, but people may notice lumps in and around the anus.
Anal dysplasia
Anal fissure
Perianal cellulitis
Anal fistula
Anal plug
Rectal prolapse
Anal wink
Genital ulcer