A Nomogram to Predict Anal Condyloma Acuminatum Recurrence in HIV-negative Patients Following Photodynamic Therapy: A Decade-Long Retrospective Clinical Study at a Single Tertiary Hospital

Anal condyloma acuminatum (CA) is marked by its thorny treatment and high recurrence rate. Although 5-aminolevulinic acid photodynamic therapy (ALA-PDT) demonstrates significant efficacy and safety in treating anal CA, it does not completely prevent recurrence. This study aimed to develop and validate a nomogram model in predicting the risk of relapse in HIV-negative patients with anal CA following treatment with ALA-PDT.