Comparison and Analyses of Intraoperative Consultation and Paraffin Section Responses of Ovarian Lesions

Objective: We aimed to analyze the sensitivity, specificity, positive predictive values (PPV) and negative predictive values (NPV) and the accuracy of frozen section (FS) method and compare the concordance of FS responses and paraffin section (PS) (final histopathological diagnoses) results of the ovarian mass operations in our hospital. Methods: We retrospectively reviewed the cases of ovarian lesions operated between March 2008 and June 2018 in which FS was requested. In total 205 cases were found and the results were compared. The FS responses and PS results were classified as benign, borderline and malignant. Seventeen cases weren't responded in FS (and left to be diagnosed in PS) and they were left out of the study. Results: According to the analyses; the sensitivity of benign, borderline and malignant tumors were 100%, 83%, 95%, and the specificity were 98%, 99%, 98%, respectively. The PPV of borderline and malignant tumors were 91%, 92% and the NPV were 98%, 99% respectively. Furthermore; both of their accuracy was 97%. The concordance between the methods was assessed with Kappa test and found as 94% (p<0.001). Conclusion: In our study we showed that even if all of the FS responses didn't match with its PS, FS has a very high rate of consistency. FS is a way to help the surgeon during the operation. However, it must not be forgotten that this method has its own pitfalls and limitations.