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  • Title: The "Parachute" Technique for the Endoscopic Repair of High-Flow Anterior Skull-Base CSF Leaks.
    Author: Fiore G, Bertani GA, Carrabba GG, Guastella C, Marfia G, Tariciotti L, Gribaudi GL, Mantovani G, Di Cristofori A, Locatelli M.
    Journal: World Neurosurg; 2021 Jul; 151():e880-e887. PubMed ID: 33974988.
    Abstract:
    OBJECTIVE: This 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. METHODS: A 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. RESULTS: Thirty-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. CONCLUSIONS: Our 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.
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