Inverted papilloma of the sphenoid sinus: criteria of operability and algorithm of treatment
- Authors: Nersesyan M.V.1,2, Ghazal H.1,2, Polev G.A.2, Popadyuk V.I.1
-
Affiliations:
- RUDN University
- Department of Head & Neck Surgery, Ilyinskaya Hospital
- Issue: Vol 16, No 1 (2026)
- Pages: 12-26
- Section: DIAGNOSIS AND TREATMENT OF HEAD AND NECK TUMORS
- Published: 09.06.2026
- URL: https://ogsh.abvpress.ru/jour/article/view/1120
- DOI: https://doi.org/10.17650/2222-1468-2026-16-1-12-26
- ID: 1120
Cite item
Abstract
Introduction. Sphenoid sinus (SS) is a very rare site of inverted papilloma (IP). Surgery of IP located in the SS is complicated due to close proximity of vital structures and high risk of their damage during the operation. Radical surgery involving resection of the primary site of tumor growth and adherence to oncological principles is very complex due to the risk of severe complications. Some authors consider SS IP to be unresectable. Therefore, there are very few publications on this topic in the scientific literature.
Aim. To analyze a case series of treatment of IP located in the SS and resected endoscopically endonasally, as well as compare our data with the results presented in literature.
Materials and methods. Literature data and our experience of treating patients with SS IP which previously were considered unresectable were analyzed. In 7 years, between 2019 and 2025, at the Burdenko National Medical Center of Neurosurgery and Center of Head and Neck Surgery of the Ilinskaya Hospital, 12 patients with this pathology (2 (16.7 %) women and 10 (83.3 %) men) received treatment. Mean patient age was 60 (26–76) years. In 2 (16.7 %) patients with multifocal SS IP growth and recurrence, who underwent multiple previous surgeries, with the initial growth sites in the area of the optic canal and posterior SS wall with its destruction in one case and in the area of lateral SS wall in the other case, squamous cell carcinoma was diagnosed.
Results. All patients underwent endoscopic IP resection. In 9 (75 %) cases, extended sphenoidotomy with resection of the initial IP growth site was performed, in 3 (25 %) of the cases, surgery was performed in 2 stages. Follow-up of 11 patients was 40.2 (26–68) months; 1 patient was lost to follow-up. Recurrence developed in 2 (18.2 %) patients with multicentric IP growth (with diagnosed squamous cell carcinoma). Both patients died (5 and 1.5 years after the surgery). No recurrences were observed in other patients.
Conclusion. Inverted papilloma of the SS is a very rare pathology. Its surgical treatment is complicated and associated with high risk of severe intraoperative complications. These surgeries should be performed by experienced surgeons using intraoperative navigation. The risk of recurrence after SS IP resection is significantly higher (18.2 %) than for IP in other sites. Conversely, high probability of malignant transformation of SS-located IP is present due to impossibility of its radical resection in some cases. For best results, we recommend extended endoscopic access to the SS using intraoperative navigation and multiple-stage surgical intervention in cases when IP cannot be resected in one step. Additionally, regular life-long follow-up of patients after surgery is necessary with frequency of once every 6 months for early detection of recurrence which can be resected endoscopically.
About the authors
M. V. Nersesyan
RUDN University; Department of Head & Neck Surgery, Ilyinskaya Hospital
Author for correspondence.
Email: nermarina@yahoo.com
ORCID iD: 0000-0003-2719-5031
Russian Federation, 6 Miklukho-Maklaya St., Moscow, 117198; Bld. 2, 2 Rublevskoye Predmestie, Glukhovo Village, Krasnogorsk City, Moscow Region, 143421
H. Ghazal
RUDN University; Department of Head & Neck Surgery, Ilyinskaya Hospital
Email: nermarina@yahoo.com
ORCID iD: 0009-0003-5924-1634
Russian Federation, 6 Miklukho-Maklaya St., Moscow, 117198; Bld. 2, 2 Rublevskoye Predmestie, Glukhovo Village, Krasnogorsk City, Moscow Region, 143421
G. A. Polev
Department of Head & Neck Surgery, Ilyinskaya Hospital
Email: nermarina@yahoo.com
ORCID iD: 0000-0002-7175-6417
Russian Federation, Bld. 2, 2 Rublevskoye Predmestie, Glukhovo Village, Krasnogorsk City, Moscow Region, 143421
V. I. Popadyuk
RUDN University
Email: nermarina@yahoo.com
ORCID iD: 0000-0003-3309-4683
Russian Federation, 6 Miklukho-Maklaya St., Moscow, 117198
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