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Int J Cancer. 2005 Aug 10;116(1):136-43.

Cumulative 5-year diagnoses of CIN2, CIN3 or cervical cancer after concurrent high-risk HPV and cytology testing in a primary screening setting.

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1
Institute of Medical Statistics, Information Sciences and Documentation, Friedrich-Schiller-University, Jena, Germany.

Abstract

The aim of our study was to assess the cumulative 5-year diagnoses of CIN2, CIN3 or invasive cervical cancer (CIN2+) after concurrent screening by high-risk HPV test and Pap smear in a primary screening setting. Four thousand thirty-four women from Eastern Thuringia/Germany were recruited from 1996 to 1998 for baseline screening that included routine cytology, high-risk HPV testing by consensus primer PCR GP5+/6+ and routine colposcopy. After a median of 59 months 3,153 women participated in final screening using identical methods. Women with abnormal cytology or colposcopy or a positive high-risk HPV test at any time during the study period were recalled for expert colposcopy and histologic verification. CIN2+ was detected in 160 women resulting in a cumulative 5-year proportion of 4.4% (95% CI: 3.7-5.0%). Of 3,702 women who were high-risk HPV negative at baseline, 34 (1.1-95% CI: 0.7-1.4%) had either prevalent CIN2+ or developed CIN2+ within the observation period. HPV/cytology double negatives at baseline were at lowest risk for CIN2+ (1.0-95% CI: 0.7-1.4%) compared to screening positives (16.8-100% depending on combined test results). The 5-year negative predictive value in HPV-/Cyto- women was 99.0% (95% CI: 98.6-99.3%). This suggests that a prolongation of the screening intervals in this group is feasible. However, it should be noted that 1 woman developed a microinvasive carcinoma within the observation period. Moreover, 2 women with prevalent cancer were missed by both tests. The prognostic relevance of concurrent high-risk HPV/cytology screening needs to be verified further by randomized trials.

PMID:
15756677
DOI:
10.1002/ijc.20955
[Indexed for MEDLINE]
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