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    <title>Louwers, J.A.</title>
    <link>http://repub.eur.nl/res/aut/28098/</link>
    <description>List of Publications</description>
    <language>en</language>
    <image>
      <url>http://repub.eur.nl/static-eur/img/logo.png</url>
      <title>RePub, Erasmus University Rotterdam</title>
      <link>http://repub.eur.nl</link>
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    <item>
      <title>HrHPV-testing in a university hospital gynecology outpatient clinic: Recommendations for clinical practice (Article)</title>
      <link>http://repub.eur.nl/res/pub/37890/</link>
      <pubDate>2012-03-01T00:00:00Z</pubDate>
      <description>Objective: To study the effect of hrHPV-testing on the detection of CIN2/3+ in women referred to a gynecology outpatient clinic, and to assess a useful risk profile in relation to the referral reason to identify who should be tested for cervical pathology. Methods: This study was designed as an observational cohort study. In the first six months of 2007, we categorized the referral reason of 1149 consecutive women who visited our gynecology outpatient clinic and assessed the risk for CIN2/3+ as found by cytology or co-testing with a hrHPV-test and cytology. Results: Three different categories of referral reasons were identified; women with presumed cervix pathology, women with presumed endometrial pathology and women with other referral indications. The cumulative 18-month CIN2+ and CIN3+ risks were highest in the group with presumed cervical disease (adjusted risks 11.1% and 5.4% respectively) and lowest in the miscellaneous group with no suspicion of cervical and/or endometrial pathology (adjusted risks 4.1% and 1.8% respectively). HrHPV-testing detected significantly more CIN2/3+ lesions than cytology (relative detection rate: 1.42 (95%CI 1.05-1.92) and 1.38 (95%CI 0.95-2.05) respectively). Conclusions: The high (&gt; 2%) cumulative 18-month CIN2/3+ risk in patients with presumed cervical and/or endometrial pathology warrants routine cervical testing. In these women a hrHPV-test should be added to cytology because this identifies a significant number of additional women with a substantial risk of CIN2/3+ lesions who would not be identified with cytology alone. Women referred for other reasons should not have cervical testing beforehand, because of their low risk of CIN2/3+. </description>
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      <title>Risk of recurrent high-grade cervical intraepithelial neoplasia after successful treatment: A long-term multi-cohort study (Article)</title>
      <link>http://repub.eur.nl/res/pub/25854/</link>
      <pubDate>2011-05-01T00:00:00Z</pubDate>
      <description>Background: 15% of women treated for high-grade cervical intraepithelial neoplasia (CIN grade 2 or 3) develop residual or recurrent CIN grade 2 or 3 or cervical cancer, most of which are diagnosed within 2 years of treatment. To gain more insight into the long-term predictive value of different post-treatment strategies, we assessed the long-term cumulative risk of post-treatment CIN grade 2 or 3 or cancer and different follow-up algorithms to identify women at risk of residual or recurrent disease. Methods: Women who were included in three studies in the Netherlands and who were treated for CIN grade 2 or 3 between July, 1988, and November, 2004, were followed up by cytology and testing for high-risk human papillomavirus (hrHPV) at 6, 12, and 24 months after treatment, and subsequently received cytological screening every 5 years. The primary endpoint was the cumulative risk of post-treatment CIN grade 2 or higher by December, 2009. We also assessed the cumulative risk of CIN grade 2 or higher in women with three consecutive negative cytological smears and women with negative co-testing with cytology and hrHPV at months 6 and 24. This study is registered in the Dutch trial register, NTR1468. Findings: 435 women were included, 76 (17%) of whom developed post-treatment CIN grade 2 or higher, of which 39 were CIN grade 3 or higher. The 5-year risk of developing post-treatment CIN grade 2 or higher was 16·5% (95% CI 13·0-20·7) and the 10-year risk was 18·3% (13·8-24·0). The 5-year risk of developing post-treatment CIN grade 3 or higher was 8·6% (95% CI 6·0-12·1) and the 10-year risk was 9·2% (5·8-14·2). Women with three consecutive negative cytological smears had a CIN grade 2 or higher risk of 2·9% (95% CI 1·2-7·1) in the next 5 years and of 5·2% (2·1-12·4) in the next 10 years. The 5-year risk of CIN grade 3 or higher was 0·7% (95% CI 0·0-3·9) and the 10-year risk was 0·7% (0·0-6·3). Women with negative results for co-testing had a 5-year risk of CIN grade 2 or higher of 1·0% (95% CI 0·2-4·6) and a 10-year risk of 3·6% (1·1-10·7). The 5-year risk of CIN grade 3 or higher was 0·0% (95% CI 0·0-3·0) and the 10-year risk was 0·0% (0·0-5·3). Interpretation: The 5-year risk of post-treatment CIN grade 2 or higher in women with three consecutive negative cytological smears or negative co-testing for cytology and hrHPV at 6 and 24 months was similar to that of women with normal cytology in population-based screening and therefore justifies their return to regular screening. Funding: VU University Medical Center, Erasmus University Medical Center, Netherlands. </description>
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      <title>Dynamic spectral imaging colposcopy: Higher sensitivity for detection of premalignant cervical lesions (Article)</title>
      <link>http://repub.eur.nl/res/pub/22913/</link>
      <pubDate>2011-02-01T00:00:00Z</pubDate>
      <description>Objective To validate the dynamic spectral imaging (DSI) colposcope's colour-coded map in discriminating high- from low-grade cervical lesions and non-neoplastic tissue. Design Prospective, comparative, multicentre clinical trial. Setting The colposcopy clinics of three Dutch hospitals. Population Women of 18 years or over with an intact cervix, referred for colposcopy. Methods During a 3-minute image acquisition phase, the DSI colposcope was used as a regular video colposcope: the colposcopist located and graded potential lesions based on conventional colposcopic criteria. Subsequently, a colour-coded map was calculated and displayed, representing localisation and severity of the cervical lesion. Biopsies were collected from all atypical sites, as identified by digital mapping and/or conventional colposcopy. Furthermore, one additional biopsy was taken. Main outcome measures Histologically confirmed high-grade cervical disease (CIN2+). Results In total 275 women were included in the study: 183 women were analysed in the 'according-to-protocol' (ATP) cohort and 239 women in the 'intention-to-treat' (ITT) cohort. In the ATP cohort, the sensitivity of DSI colposcopy to identify women with high-grade (CIN2+) lesions was 79% (95% CI 70-88) and the sensitivity of conventional colposcopy was 55% (95% CI 44-65) (P = 0.0006, asymptotic McNemar test). When the DSI colour-coded map was combined with conventional colposcopy, the sensitivity was 88% (95% CI 82-95). Conclusions DSI colposcopy has a significantly higher sensitivity to detect cervical lesions than conventional colposcopy. If the colour-coded map is combined with conventional colposcopic examination, the sensitivity increases further.</description>
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      <title>Colposcopic characteristics of high-risk human papillomavirus-related cervical lesions (Article)</title>
      <link>http://repub.eur.nl/res/pub/28337/</link>
      <pubDate>2010-01-01T00:00:00Z</pubDate>
      <description>OBJECTIVE. Because high-risk human papillomavirus (hrHPV) is the necessary factor in the development of high-grade cervical lesions, knowing the colposcopic differences between hrHPV-positive and hrHPV-negative lesions could be of value. We have evaluated whether there are colposcopic differences between lesions testing hrHPV-positive or hrHPV-negative. MATERIALS AND METHODS. This study was conducted as a retrospective case-control study. We designed a scoring system for colposcopic criteria that might be of relevance to distinguish hrHPV-positive from hrHPV-negative lesions. Colposcopic images were analyzed from patients at the VU University Medical Center Amsterdam, the Netherlands, in whom a GP5+/6+ polymerase chain reaction hrHPV test had been performed within a month of the colposcopic examination (n = 507). RESULTS. Visibility of the transformation zone (corrected for age), a (very) coarse and irregular punctation pattern, and a large lesion (&gt;25% of the visible cervix) were more often associated with a positive hrHPV test status (p =.001, odds ratio [OR] = 2.29, 95% CI = 1.41-3.73; p =.036, OR 2.37, 95% CI = 1.08-5.19; and p =.044, OR = 1.78, 95% CI = 1.08-2.94, respectively). After correction for histologic diagnosis, the difference between hrHPV-positive and hrHPV-negative lesions for visibility of the transformation zone and lesion size remained statistically significant (OR = 2.44, 95% CI = 1.35-4.41 and OR = 1.92, 95% CI = 1.04-3.54, respectively). CONCLUSIONS.: This study indicates that visibility of the transformation zone, (very) coarse punctation pattern, and larger lesion size were the main colposcopic features associated with a hrHPV-positive test status. </description>
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