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Prospective follow-up of cervical HPV infections: Life table analysis of histopathological, cytological and colposcopic data

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Abstract

A total of 532 women with established cervical HPV infection have been prospectively followed (without treatment) since 1981 for a mean of 45 (SD 21) months. The patients were examined by colposcopy, PAP smears and/or punch biopsy every 6 months. The life-table method was applied to analyze the clinical course (i.e. regression and progression) of the HPV lesions, stratified by their colposcopic pattern, PAP smear findings and grade of CIN. During the follow-up, 107 (41.8%) of 256 patients with HPV-NCIN lesion in the first punch biopsy, experienced spontaneous regression. The corresponding proportions for HPV-CIN I, HPV-CIN II and HPV-CIN III lesions were 31.1%,34.2%, and 20.7%, respectively. In the overall comparison between these four groups, the heterogeneity in the probability of regression was statistically significant (p = 0.0005). Clinical progression was also associated significantly with the histological grade of the lesions in the first biopsy. Progression rate was only 5.8% for HPV-NCIN lesions, as compared to 12.3% for HPV-CIN I, 20% for HPV-CIN II, and 55.2% for HPV-CIN III. The probability of progression varied significantly between the four groups (p < 0.00001). Cumulative proportion of regression was 46% for patients with PAP smear class I, 84% with class II, and 82% for those with class III, cells, i.e. PAP smear was not of value in predicting the regression. However, PAP smears predicted clinical progression (p = 0.006 overall). Cumulative proportion of progression was low (18%) for lesions with normal colposcopic pattern on first clinical examination, as contrasted to 45% and 53% for those with mosaic and punctation, respectively (overall, p = 0.101). These data confirm the previous concepts on HPV-CIN as true precancer lesions with a definite potential for clinical progression. The value of histologic grade and, to lesser extent, the PAP smear findings as prognostic factors is emphasized.

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Authors and Affiliations

  1. Department of Community Health and General Practice, Finnish Cancer Society, Kuopio

    V. Kataja & J. T. Salonen

  2. Department of Clinical Microbiology, University of Kuopio, POB 6, SF-70211, Kuopio, Finland

    R. Mäntyjärvi & S. Parkkinen

  3. Department of Gynecology & Obstetrics, University of Kuopio, POB 6, SF-70211, Kuopio, Finland

    M. Väyrynen, S. Saarikoski, M. Yliskoski & O. Castren

  4. Department of Pathology, University of Kuopio, POB 6, SF-70211, Kuopio, Finland

    S. Syrjänen

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  1. V. Kataja
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Laboratory of Pathology & Cancer Research, Finnish Cancer Society, Kuopio

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Kataja, V., Syrjänen, K., Mäntyjärvi, R. et al. Prospective follow-up of cervical HPV infections: Life table analysis of histopathological, cytological and colposcopic data. Eur J Epidemiol 5, 1–7 (1989). https://doi.org/10.1007/BF00145037

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