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  • 1975-1979  (3)
  • Classification of gliomas  (2)
  • Cerebral Vessel Occlusions  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 37 (1977), S. 75-91 
    ISSN: 0942-0940
    Keywords: Supratentorial astrocytomas ; Recurrences of astrocytomas ; Classification of gliomas ; Recurrence intervals ; Radiotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report 137 recurrent supratentorial astrocytomas. The primary tumours diagnosed on the basis of a grading system with three stages were 72 astrocytomas I and 65 astrocytomas II. In the first group 14% of the recurrences were not changed, 55.5% became astrocytomas II, and 30.5% became glioblastomas. In the second group 55.4% were unchanged, and 44.6% became glioblastomas. The postoperative intervals until reintervention or death were statistically examined. It seems that the recurrence time chiefly depends on the nature of the primary tumour. The transformation of an astrocytoma I to a glioblastoma takes longer than the transformation of an astrocytoma II into a glioblastoma. In about two thirds of all astrocytomas an increase of malignancy is to be expected. From the histological picture it is not possible in an individual case to predict the likelihood or speed of malignant change. With regard to the effect of irradiation the authors conclude that radiotherapy most probably does not produce malignancy.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0942-0940
    Keywords: Supratentorial oligodendrogliomas ; Recurrences of oligodendrogliomas ; Classification of gliomas ; Recurrence intervals ; Radiotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary On the basis of a three stage grading system we report 23 stage one recurrent oligodendrogliomas (O 1), and 29 stage two recurrent oligodendrogliomas (O 2). In the O 1 group after the first interval 15 became O 2 and 2 became glioblastomas. Twenty tumours of the O 2 group after the first interval were not changed, three became oligodendroglioma-astrocytomas stage 2, and six became glioblastomas. The time relation for the recurrent phase in the primary O 1 group is calculated as 42 months, and in the primary O 2 group as 22 months, but this is without significance. For the development of malignancy, especially for the change to glioblastoma, a prominent participation by transformed local astrocytes seems to be essential. Postoperative irradiation most probably does not favour malignant change. A prolongation of the expectation of life by radiotherapy is not noticed.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European archives of psychiatry and clinical neuroscience 220 (1975), S. 59-66 
    ISSN: 1433-8491
    Keywords: Hemoglobinopathy ; Hemolytic Anemia ; Oxygen Deficit ; Cerebral Vessel Occlusions ; Electronmicroscopy ; Genetic Disorders ; Hämoglobinopathie ; Hämolytische Anämie ; Sauerstoffmangel ; Cerebrale Gefäßverschlüsse ; Elektronenmikroskopie ; Erbkrankheiten
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird über neuropathologische Befunde bei einer Sichelzell-Erkrankung einer sizilianischen Gastarbeiterin berichtet. Nach der Hämoglobin-Elektrophorese hatte eine Sichelzell-β-Thalassämie vorgelegen, für die wiederholte Gefäßverschlüsse durch gesichelte Erythrocyten unter dem klinischen Bilde von schmerzhaften „Krisen“ charakteristisch sind. Histologisch fanden sich in Rinde und Mark verschieden alte Ganglienzell-Nekrosen mit gliöser Reaktion. In den mit Drepanocyten verlegten Capillaren und kleineren Gefäßen ließ sich in unterschiedlicher Menge Lipid nachweisen. Das Zustandekommen des Sichelungsphänomens wird unter Berücksichtigung experimenteller Befunde diskutiert. Auf die besondere, auch berufliche Gefährdung der Sichelzell-Merkmalsträger wird hingewiesen.
    Notes: Summary The neuropathologic findings on a case of sickle cell anemia in a Sicilian worker in Germany are reported. Based on hemoglobin electrophoresis, sickle cell β-thalassemia could be detected, in which repeated vascular occlusions by sickled erythrocytes are characteristic. These occlusions are accompanied by painful “crises”. Histological examination of cerebral cortex and white matter showed necroses of nerve cells with glia reaction of different states. Lipidic material in varying amounts could be demonstrated in the occluded capillaries and smaller vessels. The origin of the sickling phenomenon is discussed on the basis of experimental findings. Special and professional risks of sickle cell traits are emphasized.
    Type of Medium: Electronic Resource
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