European Journal of Gynaecological Oncology (EJGO) is published by IMR Press from Volume 40 Issue 1 (2019). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement with S.O.G.
Purpose of investigation: To evaluate if colposcopy and electrical impedance spectroscopy (EIS) are complementary and hence increase the detection of high-grade cervical intraepithelial neoplasia (HG-CIN). Materials and Methods: A cohort of 1,237 women with an abnormal cervical cytology result referred to a single colposcopy service to assess the value of EIS as an adjunct to colposcopy for the detection of HG-CIN. Results: Fifty-three (12.8%) extra cases of HG-CIN were detected by a combination of colposcopy and EIS (466 vs. 413). Ten cases were referred with high-grade cytology and 43 were associated with low-grade cytology. The increased detection of HG-CIN in women referred with low-grade cytology was 50% (129 vs. 86). The combination of colposcopy and EIS produced a highly significant improvement in the detection of HG-CIN. Conclusions: Comparison of the performance metrics with a previous multi-centre trial shows that use of EIS as an adjunct increases performance over that obtained from colposcopy alone. The largest improvement is in increased sensitivity and NPV when used to detect HG-CIN, particularly in women referred with low-grade cytology.