• World Neurosurg · Jul 2021

    The "Parachute" technique for the endoscopic repair of high-flow anterior skull-base CSF leaks.

    • Giorgio Fiore, Giulio Andrea Bertani, Giorgio Giovanni Carrabba, Claudio Guastella, Giovanni Marfia, Leonardo Tariciotti, Giulia Letizia Gribaudi, Giovanna Mantovani, Andrea Di Cristofori, and Marco Locatelli.
    • Department of Neurosurgery, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Medical-Surgical Physiopathology and Transplantation, University of Milan, Milan, Italy. Electronic address: giorgiofiore.doc@gmail.com.
    • World Neurosurg. 2021 Jul 1; 151: e880-e887.

    ObjectiveThis study aims to assess the feasibility and reliability of our endoscopic trans-nasal technique for the repair of cribriform and sellar high-flow cerebrospinal fluid (CSF) leaks.MethodsA comparison between patients suffering from high-flow rhinorrhea and treated through a free grafting endoscopic technique or the "parachute" technique, our nasal packing proposal, was performed.ResultsThirty-three patients were included. The mean age was 52 years (range: 36-68 years). The etiology of the CSF leaks was iatrogenic in 16 cases (48.5%), traumatic in 5 cases (15.2%), spontaneous in 11 cases (33.3%), and related to anterior skull base tumors in 1 case (3%). The bone defect affected the sphenoidal sinus in 20 cases (60.6%), the cribriform plate of the ethmoid in 10 cases (30.3%), and both the sphenoid and ethmoid in 3 cases (9.1%). The mean size of bone defects was 8.5 ± 3.9 mm. The median follow-up was 28 (64) months. A CSF leak recurrence occurred in no cases treated with the parachute technique and in 3 cases that underwent conventional endoscopic treatments. The CSF leak recurrences were associated with 2 iatrogenic and 1 post-traumatic fistula. All the CSF leak recurrences underwent the parachute technique, not showing second recurrences.ConclusionsOur results suggest that the parachute technique is simple, safe, and effective. We recommend it as an alternative treatment to vascular flaps for the treatment of high-flow and recurrent fistulas.Copyright © 2021 Elsevier Inc. All rights reserved.

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