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  • Title: [Computed tomography of intracranial epidermoid cysts].
    Author: Picard L, Bernard C, Almeras M, Bracard S, Roland J.
    Journal: J Radiol; 1983 Oct; 64(10):529-35. PubMed ID: 6663547.
    Abstract:
    Diagnostic criteria of intracranial epidermoid cysts were established from the observation of 15 cases, confirmed by pathology, seen during the last 5 years. Tumors could be divided into four groups: posterior fossa, supratentorial spaces, transtentorial and extradural. Regions of hypodensity associated with the irregular nature of the outlines of the lesion are generally sufficient to suggest the diagnosis in a pre-operative scan, but certain tumors may be isodense or, more exceptionally, spontaneously hyperdense. Contrast images are extremely rare, and are seen only at the periphery of the lesions. The "mass-effect" is remarkably discrete when compared with the tumor size, sometimes of very large proportions.
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