amount importance to the surgeon (14). FS of a suspected central nervous system (CNS) neoplasm is chiefly performed to assess the adequacy of the submitted tissue in the setting of stereotactic biopsies (10), and several ancillary studies can be performed on the submitted tissue before routine processing (10,12,17,25,26). In addition, tumors such as astrocytomas and oligodendrogliomas can be intraoperatively diagnosed with great success using smear cytology (24), and the diagnostic yield for most tumor types can be substantially increased when crush smears and FSs are used simultaneously (6). The accuracy of FS diagnosis of CNS lesions has
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