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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 62 (1983), S. 15-23 
    ISSN: 1432-0533
    Keywords: Brain death ; Ischemic neuronal alterations ; Brain stem ; Meningoencephalitic reaction ; Reperfusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The varying cell picture of the brain in brain death is impressive. Some authors have interpreted this cell picture as a result of intravital autolysis and others as necrosis, at which the maturation time obviously plays an important part. The following time-dependent cerebral changes were established on the basis of an evaluation of 190 brain death cases: (1) neuronal necroses that arise at different rates within the cerebral cortex and the lower brain stem; (2) a hemorrhagic-meningoencephalitic reaction that occurs exclusively at least 4 days after brain death or hemorrhages alone after intervals of at least 48 h; and (3) a washed-out tissue picture. The alterations in the spinal border zone of the total infarction, like in the brain itself, increase rapidly after 48 h. The regular onset of inflammatory alterations after long brain death intervals can only be explained by partial recirculation due to a decline of the high intracranial pressure. The hermorrhages and increasing necroses in some cases with longer intervals therefore are likewise evidence of a not entirely complete cerebral ischemia in spite of an angiographically demonstrable circulatory arrest.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 64 (1982), S. 215-224 
    ISSN: 0942-0940
    Keywords: Medulloblastoma ; histological variants ; biological behaviour
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In a series of 310 cases the role of the factors age, sex, location of the tumour (midline or lateral), and medulloblastoma type (classic or desmoplastic) were analysed with regard to the prognosis. The influence of therapy is not considered because of the inhomogeneity of the material and the view nowadays that treatment is insufficient. The occurrence of lateral (or hemispheric) medulloblastomas increases in the group of the 11–15 years old patients. The proportion of the desmoplastic type is greater in adults than in children, but they are distributed almost equally medially and laterally. There seems to be no definite correlation between sex and the survival time. The mean survival time increases with age. With regard to the histological subclassification into children and adults, the mean survival times are nearly identical. The only obvious factor with a decisive influence on the prognosis seems to be the time of appearance of the tumour. Additionally, the data support the conclusion that a desmoplastic medulloblastoma should be considered as a histological variant without clinical relevance.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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