Inverted papilloma with multifocal attachment is associated with increased recurrence
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Updated: Jan 24, 2026

Multifocal Electroretinograms
Published on: December 4, 2011
Charles C L Tong1, Neil N Patel1, Ivy W Maina1
1Department of Otorhinolaryngology-Head and Neck Surgery, University of Pennsylvania Health System, Philadelphia, PA.
Background:
Inverted papilloma (IP) is a benign sinonasal tumor with a well-known propensity to recur, especially at its bony attachment site. Anecdotal evidence suggests lower rate of recurrence in primary resection. We also aimed to evaluate the effect of multifocal vs single focus of attachment in disease control.
Methods:
This work is a retrospective review of 535 IP resections performed during the period from 2006 to 2016 at a tertiary-care center. Demographic data, tumor location and attachment sites, and follow-up duration data were obtained.
Results:
Two hundred ten patients were eligible for analysis. The mean age was 57 years, with an average postoperative surveillance of 36.4 months. Patients who had a previous procedure at an outside institution have a recurrence rate of 22.3%, compared with 12.4% for patients who had primary surgery at our institution. The most common site of attachment was maxillary sinus (47.6%), followed by ethmoid sinus (39%). Individual tumor review showed 50% of the patients to have multifocal attachment disease, of which there is a higher prevalence in secondary cases when compared with primary cases (53.7% vs 44.9%). Multiple tumor attachment sites had a significant effect on recurrence (odds ratio, 3.5; 95% confidence interval, 1.6-7.6; p = 0.002).
Conclusion:
Primary resection and single-focus attachment of inverted papilloma are associated with lower recurrence rates at 3-year follow-up.
Insights
Primary resection of inverted papilloma (IP) and single-focus attachment reduce recurrence rates. This study analyzed 210 patients, finding lower recurrence in primary surgeries compared to repeat procedures.
Area of Science:
- Otorhinolaryngology
- Oncology
- Surgical Pathology
Background:
- Inverted papilloma (IP) is a benign sinonasal tumor known for its high recurrence rate, particularly at the bony attachment site.
- Previous surgical interventions may influence recurrence rates.
- Understanding factors affecting disease control is crucial for effective management.
Purpose of the Study:
- To evaluate the recurrence rates of inverted papilloma based on surgical approach (primary vs. secondary resection).
- To assess the impact of multifocal versus single-focus tumor attachment on disease control.
- To identify predictors of recurrence in sinonasal inverted papilloma.
Main Methods:
- Retrospective review of 535 inverted papilloma resections from 2006 to 2016 at a tertiary-care center.
- Analysis of demographic data, tumor location, attachment sites, and postoperative surveillance.
- Statistical analysis to determine the effect of surgical history and attachment patterns on recurrence.
Main Results:
- A total of 210 patients were analyzed with a mean follow-up of 36.4 months.
- Patients undergoing primary surgery at the institution had a lower recurrence rate (12.4%) compared to those with prior procedures elsewhere (22.3%).
- Multifocal tumor attachment sites significantly increased the risk of recurrence (OR, 3.5; p = 0.002).
Conclusions:
- Primary resection of inverted papilloma is associated with a lower recurrence rate.
- Single-focus tumor attachment is a favorable prognostic factor for disease control.
- These findings emphasize the importance of surgical history and attachment characteristics in managing sinonasal inverted papilloma.
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