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Surgical management of ovarian lesions vary considerably depending on the nature of the lesion. As the preoperative imaging and serum tumor marker levels are of limited value in the proper categorization of ovarian lesions, intraoperative pathological assessment is commonly requested for a primary diagnosis. Aim of the study is to assess the accuracy of the frozen section in the diagnosis of ovarian masses in our center and to analyze the causes of diagnostic discrepancies. In this retrospective study, frozen section diagnosis of 233 cases of ovarian masses was compared with the permanent section diagnosis. The overall accuracy of frozen section was 91.85 %. The sensitivity of frozen section diagnosis for benign, borderline and malignant tumors was 99.2, 88.46 and 82.95 % respectively. The corresponding specificity was 96.5, 93.23 and 99.3 %. There were 19 discordant cases including 18 false negative cases and one false positive case. Frozen section is an important diagnostic tool to determine the nature of ovarian masses. Careful macroscopic examination, evaluation of multiple sections along with clinical and radiological findings helps to reduce false positive and false negative results. Frozen section examination has limitations especially in cases of borderline tumors. This modality is most effective when the pathologist and surgeon are aware of the advantages and limitations.

Role of Frozen Section in Intraoperative Assessment of Ovarian Masses: a Tertiary Oncology Center Experience.