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  • Electronic Resource  (3)
  • Ultrastructure  (2)
  • Descending transtentorial herniation  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Oligodendroglioma-like cells (clear cells) in ependymoma (1983)
    Springer
    Acta neuropathologica 62 (1983), S. 141-144 
    Details
    ISSN: 1432-0533
    Keywords: Ependymoma ; Clear cells ; Oligodendroglioma-like cells ; Mixed glioma ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A brain tumor of a 22-year-old man was composed mostly of round cells with perinuclear halos (clear cells), forming clusters intersected by small blood vessels. In some areas, the tumor cells showed perivascular arrangement and epithelial pattern. Phosphotungstic-acid hematoxylin stain and immunoper-oxidase stain for glial fibrillary acidic protein (GFAP) technique failed to stain the clear cells. Electron microscopy of the clear cells revealed them to be classical ependymoma cells with well developed intercellular junctions, microvilli and cilia. As no reporters in the past showed the evidence to clarify the nature of the clear cells, this case is considered a good example to support the viewpoint that the clear cells (oligodendroglioma-like cells) commonly observed in ependymomas are in reality ependymoma cells. It is stressed that the diagnosis of “mixed glioma” or “oligoependymoma” should be made with sufficient caution despite the recent advances of GFAP technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00684931
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Meningiomas differentiating to arachnoid trabecular cells: a proposal for histological subtype “arachnoid trabecular cell meningioma” (1991)
    Springer
    Acta neuropathologica 82 (1991), S. 327-330 
    Details
    ISSN: 1432-0533
    Keywords: Meningioma ; Microcystic meningioma ; Vacuolated meningioma ; Arachnoid trabecular cell ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Three cases of meningiomas which had abundant small vacuoles in the tumor tissue are reported. By electron microscopy, the tumor cells exhibited long and thin processes, the tips of which were united by desmosomes. The tumor tissue was revealed to have wide extracellular spaces which corresponded to the vacuoles observed by light microscopy. In previous literature, various terms have been used when referring to this meningioma, such as microcystic meningioma or vacuolated meningioma. Since the ultrastructure of the tumor showed similarity to that of normal arachnoid trabecular cells, we propose to call the tumor “arachnoid trabecular cell meningioma” denoting its morphological nature clearly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00296542
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Capsular and thalamic infarction caused by tentorial herniation subsequent to head trauma (1991)
    Springer
    Neuroradiology 33 (1991), S. 296-299 
    Details
    ISSN: 1432-1920
    Keywords: Descending transtentorial herniation ; Capsular infarction ; Thalamic infarction ; CT scan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Five patients (4 male and 1 female) were observed to have capsular and thalamic infarction ascribed to descending transtentorial herniation (DTH) caused by head injury. A lucid interval immediately after the trauma and the presence of an epidural hematoma (EDH) characterized all five cases. At the time of hospitalization consciousness was seriously impaired and signs of cerebral herniation were apparent. Two to four days after the trauma, low attenuation in the computed tomography (CT) images pinpointed intracerebral damage in the anterolateral part of the thalamus and in the internal capsule on the same side as that of the EDH in three patients, and in the other two patients bilateral thalamic and capsular damage was noted. The low attenuation implicated the perforating arteries, that is the anterior thalamoperforating and anterior choroidal arteries, suggesting infarcted regions caused by occlusion of these arteries. Findings in the present study suggest that arterial occlusion in closed head injury may result from DTH. Moreover, infarction may be attributed to the delayed effects of injury.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587809
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    Paper (German National Licenses)
    Fulltext
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