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Br J Obstet Gynaecol. 1989 Sep;96(9):1061-6.

Cytological status and lesion size: a further dimension in cervical intraepithelial neoplasia.

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  • 1Department of Histopathology, Whittington Hospital, Highgate Hill, London.


Quantitative histological study of 84 laser cone biopsies showed a highly significant correlation between the grade of a cervical smear and the size of the lesion for all grades of cervical intraepithelial neoplasia (CIN) (CIN I P = 0.004; CIN II P = 0.0001; CIN III P = 0.003; total CIN P less than 0.0001); 10 of 34 (29%) of women with CIN III and mild dyskaryosis or less had significantly smaller lesions than 23 of 36 (63%) of women with CIN III and moderate or severe dyskaryosis. Repeat cytology identified as severe dyskaryosis all those with large CIN III lesions. Lesion size has been neglected in studies of the natural history of CIN and in the assessment of cytological screening, but offers an explanation for the apparent discrepancies between cytological, colposcopic and histological assessment of progression of CIN.

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