“…The following information was collected on each patient: 1) age at onset of PV, 2) time between initial presentation of PV and anal involvement, 3) total duration of anal disease, 4) severity and symptoms of anal disease, 5) number of recurrences if any, 6) systemic treatment, 7) nonanal involvement, 8) length of remission of PV, and 9) total length of follow-up. The authors define remission as the absence of clinical disease after the discontinuation of all systemic therapy.…”