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  • Title: Facial nerve function and hearing preservation after retrosigmoid excision of vestibular schwannoma: Christchurch Hospital experience with 97 patients.
    Author: Darwish BS, Bird PA, Goodisson DW, Bonkowski JA, MacFarlane MR.
    Journal: ANZ J Surg; 2005 Oct; 75(10):893-6. PubMed ID: 16176235.
    Abstract:
    BACKGROUND: Between January 1988 and December 2002, 97 patients underwent surgery for excision of vestibular schwannoma via the retrosigmoid approach at Christchurch Hospital. METHODS: A retrospective review was undertaken of the clinical notes with emphasis on facial nerve function and hearing preservation postoperatively. RESULTS: Of patients with small and medium-sized tumours, 81% had good facial nerve function at 1 year (House-Brackmann grade 1 and grade 2), 16% had moderate function (grade 3 and grade 4) and 3% had poor function (grade 5). Of patients with large tumours, 22% had good facial function (grade 1 and grade 2), 37% had moderate function (grade 3 and grade 4) and 41% had poor function (grade 5 and grade 6). Useful postoperative hearing was preserved in 21% of the 47 patients with tumours <3 cm and useful preoperative hearing. In the last 5 years the authors have been operating in conjunction with an ear, nose and throat surgeon (PAB) trained in base-of-skull surgery. Over this period, useful hearing was preserved in 32% of patients with small and medium-sized tumours and useful preoperative hearing. CONCLUSIONS: Tumour size was an important predictor of the postoperative facial and cochlear nerve function. The multidisciplinary approach to these tumours offers better results. These results compare well with other published series.
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