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  • Title: Clinical efficacy of the 'sandwich technique' in repairing cholesteatoma with labyrinthine fistula.
    Author: Sun H, Wang T, Shi L, Zhuang S, Liu J.
    Journal: Acta Otolaryngol; 2022 Jan; 142(1):30-35. PubMed ID: 35001839.
    Abstract:
    BACKGROUND: Labyrinthine fistula is the most common complication of middle ear cholesteatoma. AIMS/OBJECTIVES: To explore the postoperative hearing changes and surgical results of repairing middle ear cholesteatoma with labyrinthine fistula using the 'sandwich technique'. MATERIALS AND METHODS: We retrospectively studied the clinical data of 36 patients (36 ears) who underwent surgical treatment for cholesteatoma with labyrinthine fistula. All patients were treated by completely removing the cholesteatoma matrix and repairing the fistula using the 'sandwich technique'. The hearing, clinical features, radiological data, intraoperative findings, and surgical results were respectively analyzed. RESULTS: Most labyrinthine fistulas were located in the lateral semicircular canal (94%). Fifty percent of fistulas were of medium size. Based on Dornhoffer classification, 17 cases of labyrinthine fistulas were classified as I. In 34 patients, the average bone conduction threshold improved or did not change after surgery. Two patients had preoperative facial paralysis. During follow-up (3-60 months), all patients had no postoperative vertigo symptoms and disease recurrence. CONCLUSIONS: Following the removal of the cholesteatoma matrix, the fistula is repaired using the "sandwich technique", which preserves or increases hearing and achieves an anti-vertiginous effect. SIGNIFICANCE: This finding suggests that, 'sandwich technique' is a feasible procedure to treat cholesteatoma with labyrinthine fistula.
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