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Petrosal presigmoid approach to the petro-clival and anterior cerebellopontine region (extended retrolabyrinthine, transtentorial approach).

Abstract
Intradural tumours affecting the clivus may be divided into three categories depending the area primarily involved by tumour. The second area extends from the spheno-occipital synchondrosis to the level of the jugular foramina. This area is best approached through the petrosal approach and suited for patients with serviceable hearing on the side of the lesion. 35 cases having skull base lesions were operated by the Skull Base Surgery Group of Ege University Medical Faculty between October 1993 and December 1997. 8 out of 35 cases having the intradural tumours affecting the petroclival and anterior cerebellopontine region, the petrosal presigmoid approach was performed in 4 patients. As hearing was absent in another 4 patients, the translabyrinthine route was coupled a the petrosal craniotomy (transtemporal approach). The aim of this article is to highlight the definitions, indications, hints and pitfalls of the approach from the otoneurological point of view.

PMID: 11799861 [Pubmed - MEDLINE]

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