It is still considered to be a possible genetic causal factor for neoplasms other than genital.. which is why it might be in your text. It may also be there due to the concern that when operating on someone’s oral/buccal area, they may have contracted a cancer through oral sex – and the testing for HPV is, in some places, mandatory.

“Of the many viruses that are potential candidates for oral carcinogenesis there is little or no evidence at the present time for either the retroviruses, adenoviruses or the Epstein-Barr virus being involved either directly or indirectly. 42 There are some data implicating Herpes simplex viruses (HSV) and the Human papillomaviruses (HPV) in the aetiology of oral cancer 1 although, if they do have an oncogenic role it is likely to be small.”

El virus del papiloma humano, papilomavirus o VPH causa una infección de transmisión sexual, por lo que es clasificado dentro del grupo de enfermedades venéreas o de transmisión sexual. La infección puede ser ocasionada por una de las más de cien cepas (tipos) diferentes de VPH que existen

Suerte ... :o)