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  • 1
    Electronic Resource
    Electronic Resource
    Combined emergency Caesarean section and intracerebral aneurysm clipping (2000)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 55 (2000), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2044.2000.01766-15.x
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  • 2
    Electronic Resource
    Electronic Resource
    Intraventricular cavernous angioma. A survey (1991)
    Springer
    Acta neurochirurgica 110 (1991), S. 140-145 
    Details
    ISSN: 0942-0940
    Keywords: Cavernous haemangioma ; intraventricular tumour ; CT ; MRI ; management ; results
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Since the availability of CT diagnostis 23 cases of intraventricular cavernous angioma (IVCA) have been published in the literature. Three additional cases have been operated upon in our Department. Based on these 26 cases the clinical data, radiological findings, treatment and outcome of IVCAs are reviewed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01400682
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  • 3
    Electronic Resource
    Electronic Resource
    Experience with 36 surgical cases of petroclival meningiomas (1992)
    Springer
    Acta neurochirurgica 118 (1992), S. 27-32 
    Details
    ISSN: 0942-0940
    Keywords: Meningioma ; clivus ; petrous pyramid ; sigmoid sinus ; transverse sinus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirty-six patients with petroclival meningiomas underwent surgery between 1978 and 1990. The tumours accounted for 13% of a total of 284 skull base meningiomas operated upon during the same time period. The most frequent neurological signs related to cranial nerve deficits, mainly of the 8th, 5th, and 7th nerves respectively. The approaches to the petroclival region were: retromastoid, pterional, subtemporal, and combined retromastoid-subtemporal. In 12 patients we used a modification of the retromastoid-subtemporal approach with preservation of the sigmoid and transverse sinus (presigmoid approach). “Total” tumour removal was achieved in 27 cases (75%). There was no postoperative death, and in 83% of cases no severe morbidity. With careful pre-operative evaluation, improved operative approaches and microsurgical techniques the treatment of petroclival meningiomas has been considerably improved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01400723
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  • 4
    Electronic Resource
    Electronic Resource
    The comparison between the growth fraction of bilateral vestibular schwannomas in neurofibromatosis 2 (NF2) and unilateral vestibular schwannomas using the monoclonal antibody MIB 1 (1995)
    Springer
    Acta neurochirurgica 134 (1995), S. 40-45 
    Details
    ISSN: 0942-0940
    Keywords: Acoustic neuroma ; cell kinetics ; labelling index ; monoclonal antibody MIB 1 ; neurofibromatosis 2 ; vestibular schwannoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Formalin-fixed paraffin sections of 55 consecutive bilateral vestibular schwannomas in 46 patients with neurofibromatosis 2 (NF2), and 50 patients with unilateral vestibular schwannomas were investigated immunohistochemically with the monoclonal antibody MIB 1 directed against recombinant parts of Ki-67 antigen. The immunohistochemical staining was carried out on dewaxed microwave oven-processed paraffin sections of formalin-fixed tumour tissues. The labelling index (LI) obtained was compared to clinical and histological findings in both groups. There was no correlation between the LI and age of the patients, tumour size, or histological type of tumour (Antoni A or B). Vestibular schwannomas in NF2 showed higher LI than unilateral vestibular schwannomas: the maximal LI found per section (LI max) ranged from 0.4 to 17.6% (mean, 2.7%) in NF2 schwannomas, and from 0 to 9% (mean, 2.2%) in unilateral schwannomas. These differences may express immunohistochemically some clinical and morphological differences between bilateral and unilateral vestibular schwannomas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01428500
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  • 5
    Electronic Resource
    Electronic Resource
    Syringomyelia in association with tumours of the posterior fossa (1995)
    Springer
    Acta neurochirurgica 137 (1995), S. 38-43 
    Details
    ISSN: 0942-0940
    Keywords: Hindbrain hernia ; syringomyelia ; cerebrospinal fluid ; extracellular fluid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In this report we describe 3 patients with syringomyelia in association with tumours of the posterior fossa. In each patient the syrinx was demonstrated on pre-operative magnetic resonance imaging (MRI). After total or partial removal of the tumour the syrinx collapsed. It is concluded that the pathogenesis of syrinx formation in this entity requires interference with normal cerebrospinal fluid (CSF) flow at the foramen magnum. We suggest that the obstruction to the flow of CSF causes alterations in the passage of extracellular fluid (ECF) in the spinal cord which lead to syringomyelia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02188778
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  • 6
    Electronic Resource
    Electronic Resource
    Acoustic Evoked Response Following Transection of the Eighth Nerve in the Rat (2000)
    Springer
    Acta neurochirurgica 142 (2000), S. 1037-1045 
    Details
    ISSN: 0942-0940
    Keywords: Keywords: Auditory brainstem response (ABR); electrocochleography (ECoG); acoustic neuroma; intraoperative monitoring.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary ¶ Object. The auditory brainstem response (ABR) is the most widely used means of intra-operative monitoring of the integrity of the auditory nerve and brainstem pathways during surgery in the cerebellopontine angle (CPA). Reliability of this and other electrophysiological techniques has been questioned because of persisting potentials in direct nerve recordings despite complete eighth nerve section.  The study was designed to assess the extent to which an acoustic evoked response persists after the cochlear nerve is lesioned in the CPA of the adult rat.  Methods. The eighth nerve was exposed microsurgically via a lateral suboccipital approach without damage to surrounding structures. The auditory brainstem response to monaurally presented click stimuli was recorded using needle electrodes and a bandpass of 10 to 5000 Hz.  Findings. Complete sharp sectioning of the nerve in the CPA resulted in immediate disappearance of brainstem-generated potentials but persistence of a large primary, vertex-positive wave in all but one case. This response was also abolished in recordings three days later and after emptying the inner ear canal. Provided that the cochlea remained intact, two weeks later a single, vertex-positive potential in the latency range of wave Ia of the ABR reappeared, reaching its peak amplitude six weeks after sectioning of the nerve.  Conclusions. The short-latency electrical potential recorded following damage of the eighth nerve in the cerebellopontine angle can be mistaken for an indication that nerve function is still preserved. The evoked injury potential is probably the major contributor to this potential that resembles wave I of the ABR. Monitoring of functional auditory integrity must neither be limited to early components of the ABR, nor to the electrocochleogram (EcoG) and the peripheral compound nerve action potential (CNAP), respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007010070060
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  • 7
    Electronic Resource
    Electronic Resource
    Facial nerve reconstruction in neurofibromatosis 2 (1994)
    Springer
    Acta neurochirurgica 126 (1994), S. 72-75 
    Details
    ISSN: 0942-0940
    Keywords: Facial nerve ; hypoglossal nerve ; neurofibromatosis 2 ; nerve reconstruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Between 1979 and 1989, 13 patients with neurofibromatosis 2 underwent reconstructions of the facial nerve after removal of bilateral acoustic or facial neurinomas. Seven patients received hypoglossal-facial nerve anastomosis, and five reveived sural nerve grafting in the cerebellopontine angle. End-to-end anastomosis and intracranial-intratemporal sural grafting were performed for one patient each, respectively. Re-innervation was seen in all cases. The results were good in 11 cases. Two patients presented with poor results due to development of neurinomas close to the site of the nerve reconstruction. The importance of reconstructive surgery in patients with neurofibromatosis is stressed. The problems regarding failure of re-innervation in some cases and difficulties in their management are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01476413
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  • 8
    Electronic Resource
    Electronic Resource
    Proliferative activity of acoustic neurilemomas without neurofibromatosis determined by monoclonal antibody MIB 1 (1995)
    Springer
    Acta neurochirurgica 134 (1995), S. 35-39 
    Details
    ISSN: 0942-0940
    Keywords: Acoustic neurilemomas ; cell kinetics ; labelling index ; monoclonal antibody MIB 1 ; proliferative activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Microscopic sections obtained from paraffin blocks of 30 consecutive neurilemomas stored in 1989 were investigated immunohistochemically with the new monoclonal antibody MIB 1 directed against recombinant parts of Ki-67 antigen. The immunohistochemical staining was carried out on dewaxed microwave-oven-processed paraffin sections of formalin-fixed tumour tissues. The labelling index (LI) obtained was below 1% in 21 cases, 1–3% in 7 cases and more than 3% in 2 cases. There was no correlation between the LI and the age of the patients or the tumour size. The major advantage of MIB 1 over previous immunohistochemical methods is its usefullness in long preserved sections which are ideal for retrospective studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01428499
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