Evidence links sexually transmitted virus and some forms of anal cancer.
D001005:Anus Neoplasms / Q000382:microbiology*; D005260:Female; D006801:Humans; D008297:Male; D027383:Papillomaviridae; D011230:Precancerous Conditions / Q000382:microbiology; D015229:Sexually Transmitted Diseases, Viral / Q000150:complications*; D014412:Tumor Virus Infections / Q000150:complications*; D002583:Uterine Cervical Neoplasms / Q000382:microbiology