4.5 Article

Pericranial Flap-Based Multilayer Reconstruction of Endoscopic Transcribriform Craniectomy for Sinonasal Malignancies

Journal

LARYNGOSCOPE
Volume -, Issue -, Pages -

Publisher

WILEY
DOI: 10.1002/lary.30921

Keywords

anterior skull base; fascia lata graft; pericranial flap; sinonasal malignancies; transcribriform approach

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The objective of this study was to propose a standardized surgical technique using the pericranial flap for reconstruction of large anterior skull base defects following resection of ethmoid bone malignancies. The results showed promising outcomes for repairing large defects.
Objective: Diffusion of endoscopic techniques for the resection of ethmoid bone malignancies through a transcribriform approach (TA) has raised new challenges regarding reconstruction options to reduce post-operative complications. Although there is consensus on the advantages of vascularized flaps over free grafts for large defects, no standard protocol exists on reconstruction procedures. In addition, although the pedicled nasoseptal flap has been extensively discussed, few studies have been published on extranasal pedicled flaps. The aim of this manuscript is to provide a detailed description of a reconstruction technique for large anterior skull base defects with the pericranial flap as part of a multilayered reconstruction. Moreover, patients treated with this approach were retrospectively assessed for post-operative complications.Methods: A detailed description of the reconstruction procedure as performed in our departments is provided. Pictures depicting the main surgical steps are also included. In addition, preliminary functional results from a retrospective series of patients who underwent a TA and subsequent pericranial flap-based multilayer reconstruction for ethmoid roof malignancies between 2016 and 2022 at two institutional centers are reported.Results: 16 patients were included in the study. Nine patients (56.3%) underwent adjuvant radiotherapy. Two patients had a biochemically-confirmed postoperative CSF leak. Only one of the two patients required surgical revision. During follow-up (mean 13 months), no other early nor delayed complications were observed.Conclusion: A standardized surgical technique with pericranial flap as part of a multilayered reconstruction for large anterior skull base defects following resection of sinonasal malignancies is proposed, which appears to be a safe choice when endonasal flaps are not available.

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