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  • 1
    ISSN: 1432-0533
    Keywords: Tissue Culture ; Electron Microscopy ; Enzyme Histochemistry ; Sympathetic Ganglioneuroblastoma ; Medulloblastoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The results of combined tissue culture, ultrastructural and enzyme histochemical investigations carried out on a sympathetic ganglioneuroblastoma are reported.In vitro a vigorous sprouting of newly formed neuritic processes was observed a few days after explantation. The enzymatic reactions for acethylcholinesterase were positivein situ as well asin vitro. The tumor elements showed the ultrastructural characteristics of nerve cells with many microtubuli and filaments, plenty of ribosomes, well developed endoplasmic reticulum. Dense bodies, corresponding to neurosecretion granula (catecholamines) were also observed. Synaptic structures were missing. The results of these investigations confirm that this kind of tumor is different from so-called medulloblastoma.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0533
    Keywords: Craniopharyngioma ; Tissue Culture ; Electron Microscopy ; Enzyme Histochemistry ; Keratine ; Enamel ; Rosenthal Fibers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Electron optical and enzyme histochemical investigations carried out on four craniopharyngiomas and their tissue cultures demonstrated that the tumour elements are keratinizing epithelial cells, plenty of tonofilaments, glycogen granules, mitochondria and desmosomes. Their ultrastructural and histochemical characteristics are the same in every part of the tumour (solid; cystic; “adamantinoma-like”). In the keratinizing cells, the reactions for non-specific esterases were high positive. The ultrastructural characteristics of the tumour cells grownin vitro are the same as thosein situ; the cells remain attached to one another by desmosomes and retain their capacity to produce keratine. This therefore seems to be a primary characteristic of the tumour cells and not a secondary dysmetabolic disturbance. Calcium was found onlyin situ. That the tumour cells may produce enamelin situ seems to be possible, but it could not be confirmed with certainty. The glial proliferation which is always presentin situ, is reactive and not neoplastic; thein vitro new built cell colonies consist only of epithelial elements.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Der Pathologe 16 (1995), S. 348-353 
    ISSN: 1432-1963
    Keywords: Schlüsselwörter Neurozystizerkose ; Zerebrale Verkalkungen ; Immuntoleranz ; Hydrozephalus ; Hirninfarkt ; Key words Neurocysticercosis ; Cerebral calcification ; Immuntolerance ; Hydrocephalus ; Cerebral infarction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary A 54-year-old female patient with a 10-year history of ventriculoperitoneal shunt resulting from communicating hydrocephalus of undetermined aetiology is reported. Transient gait disturbances and cerebral infarction at the age of 46 did not lead to further insights into the nature of the disease. After many years with only occasional disturbances, a distinct organic brain syndrome developed. Thorough examination led to a tentative diagnosis of neurocysticercosis; this was based on the history, liquor diagnosis and cerebral microcalcifications in CT. Despite the initiation of specific therapy, the patient died of the sequelae of the disease. At autopsy, characteristic cicatricial residues of mainly basal leptomeningitis were found with collapsed parasitic cysts. Additional intracerebral mesenchymal-glial reactions were less conspicuous. Residual ependymitis had caused aqueductal stenosis. Death was due to cachexia, bronchopneumonia and a lung abscess. The clinical course and morphology of neurocysticercosis are discussed. The disease has become rare in our country, but is globally the most important parasitic disease of the central nervous system.
    Notes: Zusammenfassung 54 jährige Patientin mit bereits 10 Jahre altem ventrikuloperitonealem Shunt wegen eines ätiologisch unklaren Hydrocephalus communicans. Eine passagere Gangstörung und ein Hirninfarkt mit 46 Jahren führten zu keiner weiteren Klärung der Krankheitsgenese. Nach langjähriger Zwischenphase mit gelegentlicher Verwirrung der Patientin trat ein ausgeprägtes hirnorganisches Psychosyndrom auf. Eingehende Diagnostik ergab aufgrund der Anamnese, der Liquor- und der CT-Befunde mit nachweisbaren kleinen zerebralen Verkalkungen den Verdacht auf eine Neurozystizerkose. Die Patientin starb trotz eingeleiteter spezifischer Therapie an den Folgen der Erkrankung. Bei der Obduktion zeigen sich charakteristische narbige Residuen einer v. a. basalen Leptomeningitis mit kollabierten Parasitenzysten. Zusätzliche intrazerebrale mesenchymal-gliöse Residuen waren weniger auffällig. Eine abgelaufene Ependymitis war Ursache einer Aquäduktstenose. Todesursache waren eine Kachexie, Bronchopneumonie und ein Lungenabszeß. Diskutiert werden Klinik, Verlauf und Morphologie der Neurozystizerkose, die – bei uns selten geworden – weltweit die wichtigste parasitäre Erkrankung des ZNS darstellt.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Child's nervous system 3 (1987), S. 232-234 
    ISSN: 1433-0350
    Keywords: Arachnoid cysts ; Subdural hematoma ; Hydrocephalus ; Peritoneal shunt ; Microsurgical technique ; Congenital lesions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In 11 cases of intracranial, temporal arachnoid cysts the etiology, clinical and radiographic findings, surgical treatment, and outcome are reviewed in respect of post-traumatic subdural hematoma. Cysts of the middle cranial fossa are susceptible to trauma, which may cause bleeding either into the cyst or into the subdural space. Signs and symptoms of increasing intracranial pressure (ICP), local neurological deficits, and sometimes epileptic seizures may lead to hospitalization. CT or MRI scans are diagnostic in these cases. In cases of intracranial mass lesion with displacement of the midline structures and increasing ICP, osteoplastic craniotomy is performed and the lateral wall of the cyst is resected down to the tentorial notch by a microsurgical procedure, with opening into the basal cisterns. There were no operative or postoperative complications in 11 consecutive cases. However, one boy required a cystoperitoneal shunt 3 months later as a result of hydrocephalus following subdural hematoma. Asymptomatic arachnoid cysts are discussed with respect to brain function and social behavior.
    Type of Medium: Electronic Resource
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