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  • Title: Cytologic characteristics of subependymal giant cell astrocytoma in squash smears: morphometric comparisons with gemistocytic astrocytoma and giant cell glioblastoma.
    Author: Kim SH, Lee KG, Kim TS.
    Journal: Acta Cytol; 2007; 51(3):375-9. PubMed ID: 17536538.
    Abstract:
    OBJECTIVE: To evaluate the squash smear features of subependymal giant cell astrocytoma (SEGA) in comparison with gemistocytic astrocytoma and giant cell glioblastoma. STUDY DESIGN: We compared the squash smear features of 3 cases of SEGA, 9 cases of gemistocytic astrocytoma and 3 cases of giant cell glioblastoma with the morphometric findings. RESULTS: SEGA had, on average, a 15.84 +/- 5.03-microm nucleus, 33.22 +/- 12.05-microm cytoplasm and 0.50 +/- 0.12 nuclear/cytoplasmic ratio in squash smears. In addition, SEGA showed hairlike processes distributed along the squash direction like strap cells. While the gemistocytic astrocytoma had several tumor cells showing a vertically located nucleus, the tumor cells of SEGA showed nuclei oriented mainly in parallel. CONCLUSION: These squash cytologic features of SEGA can be very helpful in the differential diagnosis by excluding mimics.
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