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  • Title: Computed tomography; the anatomic basis of the zone of diminished density surrounding meningiomas.
    Author: Sigel RM, Messina AV.
    Journal: AJR Am J Roentgenol; 1976 Jul; 127(1):139-41. PubMed ID: 180825.
    Abstract:
    Computed tomography of meningiomas often demonstrates a zone of diminished density surrounding the actual tumor. This zone may be related to widening of the subarachnoid space, cerebral edema, tissue necrosis, or demyelination. A case is presented in which the anatomic basis of the zone of diminished density was shown on pneumoencephalography and at surgery to be an enlarged subarachnoid space.
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