Hysterectomy through Minimally Invasive Surgery for Cervical High-grade Intraepithelial Neoplasia: Reassessment of the Specimens' Eligibility for Histological Examination.

Abstract

The objective was to investigate the microscopic artifacts made in the uterus of cervical high-grade squamous intraepithelial lesion (HSIL) resected by hysterectomy through minimally invasive (H-MI) procedures and to verify whether these specimens are suitable for histopathological assessment. This single-center retrospective study analyzed 28 patients with cervical HSIL, consisting of 21 premenopausal and seven postmenopausal women, who underwent H-MI. The proportion of the cervical mucosa covered by intact surface epithelium (residual ratio [RR]) was measured on microscopically. Surgical margin's status was also verified. All cases developed detachment of the cervical surface epithelium to a varying extent. The RR was significantly higher in the premenopausal patients (median: 75.5%) than in the postmenopausal patients (median: 37.6%). Among the premenopausal patients, the RR was lower in the cases on whom uterine manipulator (UM) was used (median: 70.5%) than in the cases without UM use (median 92.7%). Among the 21 cases whose resected uterus contained HSIL, the vaginal resection margin was not assessable in three (14.2%) of the seven postmenopausal cases due to the artifact. Although transvaginal manipulation of the uterus causes detachment of the cervical surface epithelium, H-MI for cervical HSIL provides an acceptable specimen for histological assessment in premenopausal patients, even if UM is used. In postmenopausal women, H-MI easily develops artifactual loss of cervical surface epithelium, sometimes providing an unfavorable specimen for microscopic assessment.