4.1 Main Findings
In this study, we observed that older age, shorter cone depth, making additional cuts, the pathology result of conizaiton tissue was HSIL or cervical cancer were independent risk factors for positive margin in conization. We thought the additional cuts was the independent risk factor of positive surgical margin, this was because in the included cases, most patients with positive margin underwent additional cuts. Among doctors, who have the habit of making additional cuts, their additional cuts were overwhelmingly effective. Additionally, the cone volume was significantly smaller, of the additional cuts cases and cases made by doctors who had habit of making additional cuts.