Risk Factor Analysis of Persistent High-Grade Squamous Intraepithelial Lesion After Loop Electrosurgical Excision Procedure Conization

Objective The aim of the study was to analyze the clinical outcomes of high-grade squamous intraepithelial lesion (HSIL) 6 months after loop electrosurgical excision procedure (LEEP). We explored the risk factors of persistent cervical HSIL after LEEP and evaluated the methods of follow-up. Patients and Methods This retrospective study included women who underwent a LEEP and had a diagnosis of HSIL in their LEEP specimen during 2011 to 2015. The purpose was to determine the risk factors among these women for having persistent HSIL disease at their 6-month follow-up visit. At their follow-up visit, each woman underwent cervical cytology and high-risk human papilloma virus (hrHPV) testing, colposcopy-directed punch biopsy, and/or endocervical curettage. Results A total of 3582 women were enrolled. There were 9 cases invasive cervical cancer found and 101 women had persistent HSIL. The persistence rate was higher in women 50 years or older. The circumference, length, and width of LEEP specimens did not differ statistically between the persistent and nonpersistent group. The persistence rate among women with positive LEEP specimen margins was higher than among women with negative margins. Positive endocervical margins were associated with a higher rate of persistence than positive ectocervical margins. Multivariate logistic analysis showed that age, positive margins, abnormal cytology, and positive hrHPV during follow-up were all independent risk factors for persistent HSIL lesions. Conclusions Being 50 years or older, positive margins, particularly endocervical margins, and having abnormal cytology and positive hrHPV testing during follow-up were risk factors for persistent HSIL lesions after LEEP conization. Colposcopy plays an indispensable role in the diagnosis of persistent HSIL and progression.