Aggressive Treatment Including Endonasal Surgical Sequestrectomy with Vascularized Nasoseptal Flap Can Improve Outcomes of Skull Base Osteoradionecrosis

Abstract

Objective Skull base osteoradionecrosis (SB-ORN) is a serious, potentially lethal complication of radiation therapy. We aimed to review the clinical characteristics and outcomes of SB-ORN according to the extent of treatment.

Design Retrospective analysis design was used for this study.

Setting The study was conducted in two tertiary care hospitals.

Participants Patients included who had been clinically diagnosed with SB-ORN from January 2006 to 2017.

Main Outcome Measures Clinical characteristics, including demographics, predisposing factors, presenting symptoms, radiological findings, treatment modalities, and treatment outcomes, were reviewed. Treatment was classified into conservative and aggressive types. Aggressive treatment included radical surgical removal of soft tissue and bony sequestrum with the placement of vascularized tissue. Treatment outcome was analyzed in terms of clinical control, survival, and carotid artery blow out.

Results Fifteen patients (11 males and 4 females) were identified during the study period. Eight patients were managed conservatively, whereas seven patients were managed with aggressive treatment. The 2-year survival was 75% in the aggressive treatment group and 15% in the conservative group (log-rank, p = 0.049). The estimated 2-year blow out free rate was 46.7% for the conservative group and 100% for the aggressive group (log-rank, p = 0.100).

Conclusion In patients with SB-ORN, aggressive management, including surgical removal of sequestrum and coverage with a pedicled flap, is associated with increased survival.

Keywords

carcinoma - endoscopy - osteoradionecrosis - radiotherapy - skull base

Publikationsverlauf

Eingereicht: 17. Mai 2020

Angenommen: 01. November 2020

Artikel online veröffentlicht:
14. Januar 2021

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