期刊
DISEASES OF THE COLON & RECTUM
卷 61, 期 7, 页码 780-786出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/DCR.0000000000001039
关键词
Anal intraepithelial neoplasia; High-resolution anoscopy; HIV infection; Learning curve; Prevalence squamous intraepithelial lesions
BACKGROUND: High-resolution anoscopy-guided biopsies are the gold standard for identifying anal intraepithelial neoplasia, but diagnosing high-grade squamous intraepithelial lesions depends on the skills of the anoscopist. OBJECTIVE: This study aims to validate the high-grade squamous intraepithelial lesion detection rate as a quality assurance metric for high-resolution anoscopy in HIV-positive men. DESIGN: This is a retrospective study. SETTING: This study was conducted at 3 HIV outpatient clinics in Amsterdam, The Netherlands. PATIENTS: HIV-positive men who have sex with men were selected for this study. MAIN OUTCOME MEASURES: We analyzed the high-grade squamous intraepithelial lesion detection rate per high-resolution anoscopy, the mean number of biopsies taken, and the mean high-grade squamous intraepithelial lesion rate per biopsy in time-subsequent groups for 7 anoscopists performing high-resolution anoscopy. RESULTS: Seven anoscopists performed high-resolution anoscopy in 1340 HIV-positive men who have sex with men. The overall high-grade squamous intraepithelial lesion detection rate for all 7 anoscopists combined increased significantly over time, from 27% to 40% (p < 0.001; OR, 1.15; 95% CI, 1.08-1.23 per 50 high-resolution anoscopies). The mean number of biopsies increased significantly from 1.4 (22% high-grade squamous intraepithelial lesions per biopsy) to 2.0 biopsies per patient (29% high-grade squamous intraepithelial lesions per biopsy) (p < 0.001). Three anoscopists showed a significant increase in proportion of high-grade squamous intraepithelial lesions per biopsy with increasing experience. LIMITATIONS: There were statistically significant differences, with limited clinical significance, in the characteristics of patient populations between anoscopists and clinics. CONCLUSIONS: We found significant variations in the high-grade squamous intraepithelial lesion detection rate among anoscopists performing high-resolution anoscopy in HIV-positive men who have sex with men. The high-grade squamous intraepithelial lesion detection rate and mean high-grade squamous intraepithelial lesion rate per biopsy can be used as a quality assurance metric to follow up the learning curve of high-resolution anoscopists. See Video Abstract at http://links.lww.com/DCR/A555.
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