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  • Title: The correlation between the grade of dyskaryosis on cervical smear, grade of cervical intraepithelial neoplasia (CIN) on punch biopsy and the final histological diagnosis on cone biopsies of the cervix.
    Author: Heatley MK, Bury JP.
    Journal: Cytopathology; 1998 Apr; 9(2):93-9. PubMed ID: 9577735.
    Abstract:
    This study was carried out to assess how reliably a punch biopsy of the cervix predicts the maximum grade of CIN present and whether a colposcopically directed punch biopsy is more reliable than cytology in predicting the grade of intraepithelial neoplasia present in the cervix. The grade of CIN in 107 cone biopsy specimens was compared with the grade of CIN and dyskaryosis in punch biopsies and smears from the same patients. Exact correlations were identified between the highest grade lesions on cone biopsy and those in 63% of punch biopsies and 49% of cervical smears. We conclude that punch biopsy provides a more reliable estimate of the highest grade of CIN present in a subsequent cone biopsy than cervical cytology, but nonetheless fails to give a consistent estimate of the final grade of CIN in a significant percentage of cases.
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