Objective: We reviewed the 15-year experience of our institution (Medical College of Wisconsin, Milwaukee, WI) in managing sinonasal inverting papilloma, examining trends in diagnosis and treatment.
Study design: Retrospective.
Methods: Thirty-seven patients with inverting papilloma were treated from 1986 to 1999. Demographic data, clinical presentations, pathological findings, surgical approaches and procedures, and recurrence rates were collected retrospectively. Each lesion was categorized into one of four groups based on computed tomography scans and endoscopic findings. This categorization was developed to compare various surgical approaches for tumors in each group.
Results: Thirty-one patients had complete information for inclusion in our study. Nineteen patients were treated endoscopically with an average follow-up of 50 months. Eight patients were in group I, five were in group II, six were in group III, and no patients were in group IV. The recurrence rate for the endoscopic group was 10%. Twelve patients underwent lateral rhinotomy or sublabial degloving approach with an average follow-up of 58 months. Five patients were in group I, three patients were in group II, 1 patient was in group III, and three patients were in group IV. The recurrence rate for the external group was 8%. Difference in recurrence rates (P =.85) was not observed between the endoscopic and external approach groups. Regardless of approach, patients who had primary resection had a recurrence of 0%, whereas those with secondary resection had a recurrence of 17% (P =.10).
Conclusions: Technological advancements have led to a trend of detecting sinonasal inverting papilloma before extension beyond the sinonasal region. Difference in recurrence rates was not observed between the endoscopic and the external approach groups. Recurrence rates are lower for primary resection versus secondary resection, regardless of surgical approach.