PubMed · 1062139
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J Lachard, R Gola, H Zattara, J P Tiziano. 1975. [Cervical lymph node excision. Conservative technics].. https://pubmed.ncbi.nlm.nih.gov/1062139/
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Total surgical decompression of the facial nerve can be offered to patients severely affected by Bell's palsy whether via the transattical or middle fossa approach. We prefer, when feasible, the transattical approach because it does not violate the cranial vault. The purpose of this study was to find the anatomical parameter of the temporal bone, measured by means of computed tomography (CT scan) and to decide which of these approaches should be offered. Sixty temporal bones were studied by CT scan, and then dissected in order to perform total facial nerve decompression via the transattical approach. Correlation between the two studies was established. Results suggest that measurement by CT scan of the attical area in the axial plane (AAA) may determine those patients for whom the transattical approach to facial nerve decompression should be undertaken.
The results of facial nerve outcome following vestibular schwannoma removal have generally ignored the sensory component of the nerve. This lack of reporting occurs partly because the distress relating to these functions is less obvious to the surgeon, and partly because the facial nerve grading systems currently used do not include the functions of the nervus intermedius. We have estimated the frequency and nature of abnormalities of nervus intermedius function following vestibular schwannoma removal using a retrospective questionnaire. Questionnaires were mailed to 257 patients and correctly completed and returned by 224 (87%) of the patients. Prior to surgery 5 (2%) of the patients complained of crocodile tears, 9 (4%) noted dryness of the eye, and 15 (6%) complained of an abnormality of taste. Postoperative crocodile tears occurred in 98 (44%), an absence or significant reduction in the production of tears was noted in 162 (72%), and a taste abnormality, either a significant reduction or an alteration in character, was noted in 107 (48%). The onset of crocodile tears approximated to a bimodal distribution, and the recovery of nervus intermedius functions was variable. This study has demonstrated that nervus intermedius abnormalities are common following vestibular schwannoma removal. It also documents their natural history and discusses the underlying pathophysiological mechanisms. We suggest that appropriate preoperative counseling be given to all patients undergoing surgery and that the functions of the nervus intermedius be included in the surgical reporting of facial nerve results in cerebellopontine angle surgery.