BackgroundInverted papilloma is a benign epithelial tumour located in the sinonasal tract with a high recurrence rate and a potential of malignant transformation. From 2017, patients with IP were included in our fast-track regime similar to head and neck cancer patients, including follow-up at 2, 6, 12, 18 and 24 months after surgery, then yearly for a total of 5 years.Aims/objectivesThis study aims to compare the recurrence rate and malignant transformation of patients with IP treated at a university centre following the implementation of a fast-track regime including a close follow-up.MethodsA retrospective study was performed on all patients with IP diagnosed between 2018 and 2022.ResultsThe study included 125 patients, all surgically treated for IP. Eight patients (6%) also presented with SCC at the time of diagnosis. The recurrence rate of benign IP was 17%. Most tumours originated in the maxillary sinus (48/117, 41%). No cases of metachronous cancer were seen during the follow-up.Conclusions and significanceThe majority of recurrences (90%) occurred within the first 2 years after treatment. No cases of malignant transformation were seen in the follow-up period. The rigorous follow-up program potentially contributed to the detection of recurrence before malignant transformation. (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(IP)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic) 2017 (sic)(sic), IP(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic) 2,6,12,18 (sic)24 (sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic) 5 (sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)((sic)(sic)(sic)(sic)(sic)(sic))(sic)(sic)(sic)(sic)(sic) IP (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic) 2018 (sic)(sic) 2022 (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) IP (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic) 125 (sic)(sic)(sic), (sic)(sic)(sic) IP (sic)(sic)(sic)(sic).8 (sic)(sic)(sic)(6%)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic) IP (sic)(sic)(sic)(sic)(sic)17%.(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(48/117, 41%).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(90%)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).