Chinese Medical E-ournals Database

Chinese Journal of Obstetrics & Gynecology and Pediatrics(Electronic Edition) ›› 2025, Vol. 21 ›› Issue (02): 157 -164. doi: 10.3877/cma.j.issn.1673-5250.2025.02.006

Original Article

Predictive value of endocervical curettage for postoperative pathological upgrading to cervical cancer in CIN2+patients

Xiaoxi Yao1, Liuxing Wei1, Ruiyu Wang1, Mengyao Li1, Qingyu Liu1, Mingrong Qie1,()   

  1. 1. Department of Gynecology,Key Laboratory of Birth Defects and Related Diseases of Women and Children(Sichuan University),Ministry of Education,West China Second University Hospital,Sichuan University,Chengdu 610041,Sichuan Province,China
  • Received:2024-10-10 Revised:2025-01-18 Published:2025-04-01
  • Corresponding author: Mingrong Qie

Objective

To analyze the predictive value of endocervical curettage(ECC)for postoperative pathological upgrading to cervical cancer in patients with biopsy result of cervical intraepithelial neoplasia grade 2 or more severe diagnoses (CIN2+).

Methods

A total of 66 pathological upgrading patients and 66 no-upgrading patients who attended the Department of Gynecology of West China Second University Hospital,Sichuan University from January 1,2019 to October 1,2023 were selected into this study,and were enrolled into study group and control troup,respectively.A retrospective analysis of the following data was done for the two group.①General clinical data:including age,gravidity,parity,menopausal status,abnormal vaginal bleeding,history of cervical lesions,transformation zone.②Clinical examination and pathological data:including cytology,human papilloma virus(HPV)test,pathological results (including cervical biopsy and ECC results),whether the lesion involved gland or not,and tumor characteristics of patients with pathologic upgrading to cervical cancer in the 2 groups of patients.The Kappa test was used to compare the results of cervical biopsy and ECC.Receiver operater curve(ROC)curve and area under curve(AUC)were plotted to calculate the predictive value of ECC for pathologic upgrading to cervical cancer.The procedures followed in this study complied with the ethical standards set by the Ethics Committee of West China Second University Hospital,Sichuan University(No.2024-474)and met the conditions for exemption of informed consent in clinical research.

Results

①The comparison of age,menopausal rate,cervical cytology results,the proportion of patients with a history of cervical precancerous lesions,and ECC pathological results between the two groups showed statistically significant differences (P<0.05).②Among the 66 patients in study group,the largest proportion was International Federation of Gynecology and Obstetrics (FIGO)stageⅠ,at 93.9%(62/66).③The results of multivariate unconditional logistic regression analysis of the risk factors for CIN2+histological progression were presented as follow.Age (OR=1.111,95% CI:1.029-1.200,P=0.007)and ECC pathological result of CIN3(OR=8.587,95% CI:2.710-27.207,P<0.001)were independent risk factors for pathological upgrading to cervical cancer post-surgery.④The number of patients with the same results between ECC and cervical biopsy was 59.The result of Kappa consistency test showed that the results of cervical biopsy were in poor agreement with the results of ECC (Kappa=0.101,P=0.062).⑤ROC curve analysis showed that the AUC value of ECC for prediction of CIN2+histological progression was 0.761(95% CI:0.678-0.845),with a cut-off value of 2.5 and a positive predictive value of 75.4%.

Conclusions

ECC has a good predictive value for postoperative pathological upgrading to cervical cancer in patients with colposcopic pathological biopsy results of CIN2+,and should be used as a supplement to cervical biopsy in patients with suspected high-grade lesions.

表1 2组患者临床资料比较
表2 研究组66例患者的肿瘤特征[例数(%)]
表3 CIN2+病理升级为宫颈癌影响因素的多因素非条件logistic回归分析结果
表4 本研究132例患者阴道镜下宫颈活检和ECC 结果的一致性检验
图1 ECC结果对预测CIN2+病理升级的ROC曲线 注:ECC为宫颈管搔刮术,CNI2+为宫颈上皮内瘤变2级及以上,ROC曲线为受试者工作特征曲线
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