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[Topographo-anatomic basis of the translabyrinthine approach to the internal auditory canal and the cerebellopontile angle]. 1986

A O Gvelesiani, and U B Makhmudov, and N S Blagoveshchenskaia, and G F Dobrovol'skiĭ

Microanatomical study of temporal bone structures and modelling of the translabyrinthine approach (70 specimens) showed that the approach provides extradural access to the internal acoustic meatus and cerebellopontine angle without injury to the nerve structures by stage-by-stage removal of the bony structures of the petrous part of the temporal bone. With this approach the dura mater covering the posterior surface of the internal acoustic meatus can be exposed for its entire length as well as an area of the dura mater of the posterior cranial fossa. The authors revealed considerable variations in the position of temporal bone structures which are the boundaries of the operative field and in the possible microsurgical manipulations in the translabyrinthine approach and removal of the tumor.

UI MeSH Term Description Entries
D008416 Mastoid The posterior part of the temporal bone. It is a projection of the petrous bone. Mastoid Foramen,Mastoid Bone,Mastoid Process,Bone, Mastoid,Foramen, Mastoid,Mastoid Bones,Mastoid Processes,Mastoids,Process, Mastoid
D008722 Methods A series of steps taken in order to conduct research. Techniques,Methodological Studies,Methodological Study,Procedures,Studies, Methodological,Study, Methodological,Method,Procedure,Technique
D008866 Microsurgery The performance of surgical procedures with the aid of a microscope.
D009464 Neuroma, Acoustic A benign SCHWANNOMA of the eighth cranial nerve (VESTIBULOCOCHLEAR NERVE), mostly arising from the vestibular branch (VESTIBULAR NERVE) during the fifth or sixth decade of life. Clinical manifestations include HEARING LOSS; HEADACHE; VERTIGO; TINNITUS; and FACIAL PAIN. Bilateral acoustic neuromas are associated with NEUROFIBROMATOSIS 2. (From Adams et al., Principles of Neurology, 6th ed, p673) Acoustic Neuroma,Melanocytic Vestibular Schwannoma,Schwannoma, Acoustic,Schwannoma, Vestibular,Acoustic Neuroma, Cerebellopontine Angle,Acoustic Tumor,Angle Tumor,Cerebellopontine Angle Acoustic Neuroma,Cerebellopontine Angle Tumor,Neurilemmoma, Acoustic,Neurilemoma, Acoustic,Neurinoma of the Acoustic Nerve,Neurinoma, Acoustic,Neuroma, Acoustic, Unilateral,Vestibular Schwannoma,Acoustic Neurilemmoma,Acoustic Neurilemmomas,Acoustic Neurilemoma,Acoustic Neurilemomas,Acoustic Neurinoma,Acoustic Neurinomas,Acoustic Neuromas,Acoustic Schwannoma,Acoustic Schwannomas,Acoustic Tumors,Angle Tumor, Cerebellopontine,Angle Tumors,Angle Tumors, Cerebellopontine,Cerebellopontine Angle Tumors,Melanocytic Vestibular Schwannomas,Neurilemmomas, Acoustic,Neurilemomas, Acoustic,Neurinomas, Acoustic,Neuromas, Acoustic,Schwannoma, Melanocytic Vestibular,Schwannomas, Acoustic,Schwannomas, Melanocytic Vestibular,Schwannomas, Vestibular,Tumor, Acoustic,Tumor, Angle,Tumor, Cerebellopontine Angle,Tumors, Acoustic,Tumors, Angle,Tumors, Cerebellopontine Angle,Vestibular Schwannoma, Melanocytic,Vestibular Schwannomas,Vestibular Schwannomas, Melanocytic
D010579 Petrous Bone The dense rock-like part of temporal bone that contains the INNER EAR. Petrous bone is located at the base of the skull. Sometimes it is combined with the MASTOID PROCESS and called petromastoid part of temporal bone. Petrous Apex,Petrous Pyramid,Bone, Petrous,Petrous Bones
D002530 Cerebellopontine Angle Junction between the cerebellum and the pons. Cerebellopontile Angle,Angle, Cerebellopontile,Angle, Cerebellopontine,Angles, Cerebellopontile,Angles, Cerebellopontine,Cerebellopontile Angles,Cerebellopontine Angles
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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