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  • Title: Anatomical study of presigmoid-retrolabyrinthine approach based on temporal bone high-resolution CT.
    Author: Hao X, Li Y, Cui D, Chen B, Liu Y, Yang B.
    Journal: Acta Otolaryngol; 2019 Feb; 139(2):117-121. PubMed ID: 30794017.
    Abstract:
    BACKGROUND: The surgical approach of acoustic neuroma includes translabyrinthine, transcranial fossa, suboccipital retrosigmoid sinus, and presigmoid retrolabyrinthine approach. Aims/Objective: To provide the anatomical basis for the surgical selection of presigmoid retrolabyrinthine approach by measuring the anatomical parameters of retrolabyrinthine space of the petrous bone by high-resolution CT. MATERIAL AND METHODS: A retrospective study of 208 high-resolution CT (HRCT) images of 104 patients examined in our hospital were analyzed retrospectively. Forty-nine males and 55 females were included in this study. Lines were drawn on the HRCT to measure the morphological data for pre-operational assessment. RESULT: Morphological data were retracted from HRCT, for preoperational assessment. CONCLUSION AND SIGNIFICANCE: Using the standard postprocessing images of temporal bone HRCT can predict the size of the retrolabyrinthine space and the degree of exposure to the inner auditory canal, providing an important anatomical index for the choice of presigmoid retrolabyrinthine approach.
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