I think Fredo should answer this with informative statistics.
I'm sure it's not common for HPV to cause problems in areas other than the cervix.
I can only say that my oncologist uses a hysterectomy as the very last resort for many reason that he's explained.
When I first found out I had HPV, I wanted everything removed. Thank goodness I was referred to an oncologist instead of having my regular GYN follow my wishes.
My oncologist explained that as uncommon as it is, its not impossible for the HPV to travel so to speak from area to area. Like, if the cervix was completely removed and I still had or got another HPV infection, it could (as long of a shot as it may seem) decide to affect an area still there...ie vaginal wall, vulva etc).
His rule of thumb is 3 invasive procedures. If that doesn't take care of it, then he opts for a radical hyster. He told me in the 30+ yrs that he's been a Dr. this has only been the case less than 10 times.
I do know that after my procedure (CO2 laser vaporization) my pap came back abnormal. The cervix was healthy but the infection was now detected on my vaginal wall. The Dr saw that spot and treated it with acid I believe.
Since then, all my colposcopy exams look great. My paps are still coming back abnormal but only slightly. The level above normal.
I know that for many women, hysterectomy is successful at finally getting rid of the virus though.
I hope this is your case!!