Evaluation of Factors Affecting Margin Positivity and Persistent Disease After Leep for Cervical Intraepithelial Neoplasia.

Background: Cervical intraepithelial neoplasia (CIN) is the precursor lesion of cervical cancer. Untreated high-grade CIN significantly increases the risk of developing invasive cancer. Conization is the main treatment. Loop electrosurgical excision procedure (LEEP) is the most common conization method used. The study aims to assess the risk factors associated with positive margin and persistent disease after LEEP for CIN.

Materials And Methods: A total of 156 patients who underwent LEEP during 2011-2018 included in the study. We analyzed the socio-demographic characteristics, colposcopy details, dimensions of LEEP specimen (thickness, length, volume) and histopathology (margin positivity, grade). Persistent disease was histologically confirmed by repeat LEEP and hysterectomy.

Results: Margin positivity was noted in 33.3% (52) patients. Residual disease was noted in 26.2% (41) of the patients who had undergone a repeat LEEP or hysterectomy. There was a significant association between margin positivity and Swede score of 5 or more, a high-grade lesion on IFCPC score, inner margin involvement, LEEP done in a single pass. The cutoff for margin positivity was length of 0.513 cm and thickness of 0.35 cm. A significant association between residual disease and margin positivity, postmenopausal status, Swede score of 5 or more, high-grade lesion on IFCPC score, inner margin involvement was observed. The chance of residual disease was less if the cone specimen had minimum length of 0.775 cm and minimum thickness of 0.65 cm.

Conclusion: When in doubt regarding the margins, it is always better to perform multiple passes for lesions with a high Swede score with an initial smear of HSIL. Postmenopausal women with inner margin positivity have a high chance of residual disease and should be either kept on close follow-up or consider a repeat procedure.