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Nationwide Rereview of Normal Cervical Cytologies before High-Grade Cervical Lesions or before Invasive Cervical Cancer
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- Edvardsson, H. (author)
- Cent Hosp Karlstad, Dept Pathol, Karlstad, Sweden.;Karolinska Univ Hosp, Dept Pathol & Cytol, Stockholm, Sweden.
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- Wang, J. (author)
- Karolinska Institutet
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- Andrae, B. (author)
- Uppsala universitet,Centrum för klinisk forskning, Gävleborg,Karolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden.;Uppsala Univ, Ctr Res & Dev, Gävle, Region Of Gävle, Sweden.
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- Karolinska Institutet Cent Hosp Karlstad, Dept Pathol, Karlstad, Sweden;Karolinska Univ Hosp, Dept Pathol & Cytol, Stockholm, Sweden. (creator_code:org_t)
- 2021-06-02
- 2021
- English.
- In: Acta Cytologica. - : S. Karger AG. - 0001-5547 .- 1938-2650. ; 65:5, s. 377-384
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Sweden has experienced an unexpected >30% increase in cervical cancer incidence among women with normal cytological screening results. We therefore performed a nationwide assessment of false-negative cytology before invasive cervical cancer. The Swedish national cervical screening registry identified 2,150 normal cytologies taken up to 10 years before 903 cases of invasive cervical cancer. The 27 cytological laboratories in Sweden were asked to rereview the slides, and all of them completed the rereview. One thousand nine hundred fifteen slides were retrieved and reviewed. Abnormalities were found in 30% of the slides, and the proportion of slides that had a changed diagnosis on rereview increased on average by 3.9% per sampling year during 2001-2016 (p < 0.03). We also asked for rereview of normal smears taken up to 42 months before a histopathologically diagnosed high-grade squamous intraepithelial lesion (HSIL) or adenocarcinoma in situ (AIS). 19/27 laboratories responded, and out of 6,101 normal smears taken before HSIL/AIS, 5,918 were retrieved and rereviewed. The diagnosis was changed in 25% of cases. In summary, we found an increasing time trend of false-negative smears taken before invasive cervical cancer. This indicates a decreased protection of normal cytology in the screening program supporting earlier findings that this is the main reason behind the recent Swedish increase in cervical cancer. We suggest that optimal cervical cancer control may be promoted by routine nationally coordinated rereview of negative smears before high-grade cervical lesions or invasive cervical cancer. © 2021 The Author(s). Published by S. Karger AG, Basel.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
Keyword
- Cervical cancer
- False negative
- Normal cytology
- Rereview
- Rereview
Publication and Content Type
- ref (subject category)
- art (subject category)
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