Cervical Intraepithelial Neoplasia Screening by Liquid-Based Pap Smear in General Gynecological Services Among Egyptian Women

This cross-sectional observational study was conducted at the Kasr Al-Aini outpatient gynecology clinics, Cairo University. A total of 984 women aged 25-60 years attending routine gynecologic care were enrolled after providing written informed consent. Women with pregnancy, prior hysterectomy, or known cervical lesions requiring diagnostic management were excluded.

Each participant completed a structured interview covering demographic characteristics, reproductive and sexual history, comorbidities, contraception use, and family history of malignancy. A standardized pelvic examination was performed, followed by cervical sampling using a cervical brush or broom. All samples were collected using the liquid-based cytology (LBC) technique, immediately preserved in fixative solution, and processed in the cytopathology laboratory using the ThinPrep system.

Slides were examined by experienced cytopathologists and classified according to the 2014 Bethesda System. Cytology results were categorized as NILM, ASC-US, LSIL, HSIL, or unsatisfactory. The primary objective was to detect any cytological abnormality suggestive of cervical intraepithelial neoplasia. Secondary objectives included describing the demographic and clinical correlates of abnormal cytology and estimating the overall prevalence of abnormal cervical cytology in this population.

The study aims to support earlier detection of cervical abnormalities, reduce progression to invasive cervical cancer, and provide population-based data to guide cervical cancer prevention strategies in Egypt.