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  • Title: Cytology of atypical and malignant meningiomas in intraoperative crush preparations.
    Author: Vogelsang PJ, Nguyen GK, Mielke BW.
    Journal: Acta Cytol; 1993; 37(6):884-8. PubMed ID: 8249507.
    Abstract:
    Six cases of atypical and malignant meningioma studied by intraoperative crush preparations are reported. Four atypical meningiomas were characterized by large cohesive and dyshesive cell clusters showing slightly pleomorphic nuclei and scant cytoplasm. The papillary meningioma yielded dyshesive groups of pleomorphic cells with variable and well-defined cytoplasm. The malignant meningioma, hemangiopericytic type, showed dyshesive cells with scant, ill-defined cytoplasm and spindle-shaped or vesicular nuclei.
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