The accuracy of cervical cancer and cervical intraepithelial neoplasia diagnosis with loop electrosurgical excisional procedure under colposcopic vision

摘要

Objective The colposcopic vision guided loop electrosurgical excisional procedure (LEEP) was studied for the effective diagnosis of cervical cancer and cervical intraepithelial neoplasia (CIN). Methods A total of 199 patients participated in this study. Individual cases were from gynecologic outpatients at Thammasat University Hospital, Thailand. These had diagnoses for CIN and were selected for treatment with colposcopic guided LEEP. The average age of patients in this study was 45. Menopausal women represented 31%, (61/199) of the patients. The most frequently found Pap smear result among these women (44%, 88/199), was that of high-grade squamous intraepithelial lesion. The next most frequent Pap smear result (32%, 64/199) was low-grade squamous intraepithelial lesion. Patients' medical records and outcomes were evaluated for consistency of pathological examination between colposcopic directed biopsy and LEEP. Discrepancies between initial diagnosis and the final diagnosis were also analyzed. Results The colposcopic guided LEEP accurately determined 100% of the cervical cancer cases and 84.8 % of the high-grade squamous intraepithelial lesion cases. Involvement of the ectocervical or endocervical margin regions was found to be 5% and 10% respectively, in this study. Excessive bleeding complication, either during the excision and/or postoperative recovery was found in 3% and 6% of cases, respectively. Conclusion LEEP under colposcopic vision is a recommended technique for ambulatory management of precancerous lesion and early diagnosis of cervical cancer. This technique significantly reduces rate of positive ectocervical cone margin involvement.