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  • 1
    ISSN: 0942-0940
    Keywords: Acute hydrocephalus ; subarachnoid haemorrhage ; ventriculostomy ; complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We reviewed the results of ventriculostomy with external ventricular drainage in patients with acute hydrocephalus complicating subarachnoid haemorrhage. Of 194 consecutive patients with subarachnoid haemorrhage admitted during the past eight years, 52 (27%) developed hydrocephalus within 72 hours of the ictus. Patients with acute hydrocephalus were in grades III to V (Hunt and Hess) at the time of evaluation and all patients with hydrocephalus underwent ventriculostomy within 24 hours of diagnosis. Twenty-six patients improved within 24 hours of cerebrospinal fluid drainage and 17 of these patients underwent surgery, nine of whom did well (Glasgow Outcome Scale 1 and 2). All 18 patients who did not improve within this period, including one who worsened, died. In eight patients the response to ventriculostomy was considered as undetermined, because of the proximity of the drain insertion to a definitive surgical procedure, and all of them had an excellent outcome (Glasgow Outcome Scale 1). Of 32 patients in grades IV and V, 17 did not improve and all of them died. Eight of the 15 patients in these grades, who were in the improved or undetermined categories, did well. Five patients (10%) developed meningitis. All patients with this complication had drainage for more than four days. Seven patients (14%) had a rebleed during the drainage. All except one patient with a rebleed had no surgery or delayed surgery and in six of them recurrent haemorrhages occurred after more than 24 hours of drainage. We conclude that routine ventriculostomy with external ventricular drainage should be considered for all patients with altered sensorium and acute hydrocephalus following subarachnoid haemorrhage. The complications of ventriculostomy can be reduced if it is followed by early definitive surgery. No benefit is derived by prolonging the drainage beyond 24 hours in patients in grades IV and V if there has been no improvement in this period, and prolonged drainage may contribute to recurrent haemorrhages and meningitis.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 96 (1989), S. 114-117 
    ISSN: 0942-0940
    Keywords: Cerebrospinal rhinorrhea ; metrizamide ; CT cisternography ; fistula repair
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Non-traumatic cerebrospinal fluid (CSF) rhinorrhea is an uncommon condition. 15 patients with non-traumatic CSF rhinorrhea having “normal pressure leaks” are presented. Metrizamide CT cisternography failed to reveal the site of the fistula in 3 patients. 11 of the 15 patients underwent surgery for closure of the fistulous communication. In 8 of them the fistula was in the anterior fossa, in one it was in the sellar floor and in two the fistula site was not seen either radiologically or at surgery. In all except the one patient with sellar floor defect an intracranial approach was used. 12 patients have been followed up for 6 months to 9 years and 10 (83%) have been cured of their rhinorrhea. The intracranial approach is preferred to an extracranial approach in the repair of anterior fossa fistulae. Conservative treatment may be effective in selected patients.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0942-0940
    Keywords: Keywords: Brain tumour; brain stem; adults; outcome.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary  Although the clinical and imaging features and behaviour of brain stem gliomas in children are well documented, similar data are not available, for adults. We have carried out a retrospective study, on 101 consecutive patients (71 children and 30 adults) with a histologically verified brain stem glioma. Duration of symptoms, clinical features, imaging characteristics, histopathology and outcome were specifically compared in children and adults with brain stem glioma. Peak incidence was in the first decade in children and in the third and fourth decades in adults. Mean duration of symptoms before admission was 9.7 months in adults and 3.6 months in children (P〈0.001). There were no significant differences in the clinical features between adults and children. Imaging characteristics revealed no major differences except that diffuse hypodense lesions involving the whole brainstem accounted for 41.2% of the lesions in children and only 11.1% of adults (P〈0.001). A stereotactic biopsy was performed in 92 patients and an open biopsy or partial excision in 9 patients. Histopathological examination showed that the majority of gliomas were diagnosed as grade II astrocytomas in both groups. Survival was significantly shorter in children when compared to adults (P〈0.01). While the tumour grade was a significant factor in predicting survival in adults, in children it did not correlate with outcome. Therefore, determination of the grade of a brain stem glioma may be of prognostic significance in adult patients.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 112 (1991), S. 136-140 
    ISSN: 0942-0940
    Keywords: Brain oedema ; cold lesion ; omental transposition ; acute effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary When used as a phrophylactic measure and in chronic experiments, omental transposition has been shown to reduce ischaemic and traumatic oedema in the spinal cord and ischaemic oedema in the brain. We designed this experiment to evaluate the acute effects of a pedicled omental graft on cold-induced brain oedema in cats. Focal oedema was induced in the left frontoparietal region of the brain of nine anaesthetized cats. In five cats, a laparotomy was done and a pedicled omental graft was placed on the lesioned left hemisphere immediately after the cold lesion was made. All cats were sacrificed 72 hours later, and the water content of the white matter was determined in the lesioned and the normal hemispheres. The mean water content of the lesioned hemisphere of the treated group of animals was not significantly different from that of the control group. We conclude that a pedicled omental graft failed to reduce vasogenic oedema in an acute model and probably has no role in the acute management of brain oedema.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 42 (2000), S. 905-907 
    ISSN: 1432-1920
    Keywords: Key words Alkaptonuria ; Ochronosis ; Spine ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present the MRI features of the lumbar spine in a patient with ochronosis.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 42 (2000), S. 153-154 
    ISSN: 1432-1920
    Keywords: Key words Sinus, sphenoid ; Haematopoietic tissue ; Thalassaemia, beta ; Sickle-cell disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report an incidentally discovered mass in the sphenoid sinus in a patient with beta thalassaemia and sickle-cell disease which proved to be an isolated site of extramedullary haematopoiesis in the skull.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 40 (1998), S. 524-526 
    ISSN: 1432-1920
    Keywords: Key words Haemangioma ; sacral ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a 55-year-old woman with coccydynia due to a sacral mass. The histological diagnosis was haemangioma. The MRI findings and the unusual location of this lesion are discussed.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 38 (1996), S. 468-469 
    ISSN: 1432-1920
    Keywords: Magnetic resonance imaging ; Surgical foreign body
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Retained surgical sponge is an uncommon complication in neurosurgical practice. We report two patients with retained surgical gauze and describe the clinical presentation and the characteristics of the foreign body on MRI.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 38 (1996), S. 468-469 
    ISSN: 1432-1920
    Keywords: Key words Magnetic resonance imaging ; Surgical foreign body
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Retained surgical sponge is an uncommon complication in neurosurgical practice. We report two patients with retained surgical gauze and describe the clinical presentation and the characteristics of the foreign body on MRI.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 38 (1996), S. 542-546 
    ISSN: 1432-1920
    Keywords: Key words Computed tomography ; Magnetic resonance imaging ; Neurocysticercosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We hypothesized that when contrast-enhanced CT reveals a solitary cerebral cysticercus granuloma, MRI would not usually provide additional information that might assist in management. We retrospectively compared visualisation of solitary cysticercus granulomas on contrast-enhanced CT and MRI in 16 patients presenting with seizures; gadolinium (Gd) enhancement was used in 6 patients. The granuloma was delineated well on both CT and MRI in 15 patients; in one patient, in whom CT was performed with 10-mm slices, it was seen only on contrast-enhanced MRI, CT and unenhanced MRI revealing only the surrounding oedema. On CT the granuloma was seen best on thin (2–5 mm) contrast-enhanced sections (in 10 patients). On MRI, Gd-enhanced images showed the granuloma best, as a ring-enhancing lesion, in all 6 patients. In the other 10 patients, the granuloma was seen only on T2-weighted images in 8 and on both T1- and T2-weighted images in 2. On T2-weighted images a characteristic low-signal ring with a high-signal centre was seen in 12 patients. Sensitivity of the imaging techniques was: contrast-enhanced CT (5 and 10 mm slices) 93.8 % (15/16); thin (2–5 mm) section contrast-enhanced CT 100 % (10/10); Gd-enhanced MRI 100 % (6/6); unenhanced MRI 93.8 % (15/16). MRI did not reveal additional granulomas or cysts in any patient. In patients strongly suspected to be harbouring this lesion, when 10-mm contrast-enhanced CT reveals only oedema, thin (2–5 mm) slice CT is a cost-effective alternative to MRI.
    Type of Medium: Electronic Resource
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