Publication: ASCCP Risk-Based Colposcopy Recommendations Applied in Thai Women With Atypical Squamous Cells of Undetermined Significance or Low-Grade Squamous Intraepithelial Lesion Cytology
Issued Date
2020-09-01
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1873233X
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2-s2.0-85089820408
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Mahidol University
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SCOPUS
Bibliographic Citation
Obstetrics and gynecology. Vol.136, No.3 (2020), 510-517
Suggested Citation
Rattiya Phianpiset, Irene Ruengkhachorn, Nida Jareemit, Pornprom Ittiamornlert, Pattama Chaopotong, Suchanan Hanamornroongruang, Navin Horthongkham ASCCP Risk-Based Colposcopy Recommendations Applied in Thai Women With Atypical Squamous Cells of Undetermined Significance or Low-Grade Squamous Intraepithelial Lesion Cytology. Obstetrics and gynecology. Vol.136, No.3 (2020), 510-517. doi:10.1097/AOG.0000000000003982 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/59172
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Title
ASCCP Risk-Based Colposcopy Recommendations Applied in Thai Women With Atypical Squamous Cells of Undetermined Significance or Low-Grade Squamous Intraepithelial Lesion Cytology
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Abstract
OBJECTIVE: To compare the proportion of cervical intraepithelial neoplasia (CIN) 2 or worse pathology among different risk strata according to the ASCCP when applied in women who had atypical squamous cells of undetermined significance (ASC-US) or low-grade squamous intraepithelial lesion (LSIL) cervical cytology; to assess performance of colposcopy; and to assess the independent predictors for detected CIN 2 or worse pathology. METHODS: This is a secondary analysis of a previous prospective study, which included Thai women with ASC-US or LSIL cytology who underwent high-risk human papillomavirus (HPV) testing and subsequent colposcopy with directed biopsy. Patients were classified as lowest-risk, intermediate-risk, or highest-risk based on cervical cytology, high-risk HPV testing, and colposcopic impression. The proportion of CIN 2 or worse pathology and associated prognostic factors were analyzed. RESULTS: Of 697 women, 103 (14.8%), 573 (82.2%) and 21 (3%) were classified into lowest-risk, intermediate-risk, and highest-risk groups, respectively. The proportion of CIN 2 or worse pathology was 1%, 11.2%, and 61.9% in those same groups, respectively (P<.001). Colposcopy to detect CIN 2 or worse pathology had a sensitivity, specificity, positive predictive value, and negative predictive value of 98.7%, 18%, 13.2%, and 99.1%, respectively. Independent predictors for detecting CIN 2 or worse pathology were positive high-risk HPV, HPV 16/18 positivity, and high-grade colposcopic impression. CONCLUSION: This study supports a no biopsy with follow-up strategy in the lowest-risk group, inconsistent with ASCCP recommendations, but is in alignment with a strategy of multiple targeted biopsies in the intermediate-risk and highest-risk groups.