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Follow-up of women with cervical cytological abnormalities showing atypical squamous cells of undetermined significance or low-grade squamous intraepithelial lesion : a nationwide cohort study
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- Sundström, Karin (author)
- Karolinska Institutet
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- Lu, Donghao (author)
- Karolinska Institutet
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- Elfström, K. Miriam (author)
- Karolinska Institutet
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- MOSBY-ELSEVIER, 2017
- 2017
- English.
- In: American Journal of Obstetrics and Gynecology. - : MOSBY-ELSEVIER. - 0002-9378 .- 1097-6868. ; 216:1
- Journal article (peer-reviewed)
Abstract
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- BACKGROUND: Atypical squamous cells of undetermined significance or low-grade squamous intraepithelial lesion in abnormal cervical cytology among young women in cervical cancer screening is an increasing health burden, and comparative effectiveness studies of different management options for such diagnoses are needed. OBJECTIVE: The objective of the study was to compare the incidence of invasive cervical cancer, following different management options pursued after an atypical squamous cells of undetermined significance/low-grade squamous intraepithelial lesion index smear. STUDY DESIGN: In this nationwide cohort study, we included all women aged 22-50 years and resident in Sweden 1989-2011 and with at least 1 cervical smear registered during the study period ( n = 2,466,671). Followup of a first atypical squamous cells of undetermined significance/low-grade squamous intraepithelial lesion cytological diagnosis within 25 months was classified as repeat cytology, colposcopy/biopsy, or without further assessment. Incidence rate ratios and 95% confidence intervals of subsequent cervical cancer within 6.5 years following atypical squamous cells of undetermined significance/low-grade squamous intraepithelial lesion were estimated using Poisson regression by age group and management strategy. RESULTS: Women managed with repeat cytology within 6 months after atypical squamous cells of undetermined significance or low-grade squamous intraepithelial lesion cytology had a similar risk of cervical cancer compared with colposcopy/biopsy ( incidence rate ratio, 1.1, 95% confidence interval, 0.5-2.5, and incidence rate ratio, 2.0, 95% confidence interval, 0.6-6.5, respectively) among women aged 22-27 years. For women aged 28 years and older, women managed with repeat cytology had a higher risk for cervical cancer than women managed with colposcopy/biopsy. CONCLUSION: Our findings suggest that women with a first cytological diagnosis of atypical squamous cells of undetermined significance/low-grade squamous intraepithelial lesion up to age 27 years may indeed be safely followed up with repeat cytology within 6 months. A large amount of colposcopies that are currently performed in this group, therefore, could safely be discontinued.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Reproduktionsmedicin och gynekologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Obstetrics, Gynaecology and Reproductive Medicine (hsv//eng)
Keyword
- atypical squamous cells of undetermined significance
- cervical cancer
- comparative effectiveness
- low-grade squamous intraepithelial lesion
- screening
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Dillner, Joakim
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- Sparén, Pär
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- MEDICAL AND HEALTH SCIENCES
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- Uppsala University
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