Correlation of Salivary Gland FNA Reporting Using the Modified Milan System for Reporting Salivary Gland Cytopathology (MSRSGC) and Intraoperative Frozen Section Evaluation with Final Histopathology Report for Major Salivary Gland Neoplasms

Fine needle aspiration (FNA) is a commonly used investigation for salivary gland lesions. The modified MSRSGC was introduced to standardise the FNA reporting of major salivary gland lesions. A frozen section is also used intraoperatively for these lesions. In this retrospective study, we included all patients who were treated at our institute between January 2012 to December 2019. The FNA reports of all the patients were reclassified based on the modified MSRSGC, and the sensitivity, specificity, and positive and negative predictive values were calculated. We also assessed the indication for utilising the frozen section and correlated it with the preoperative FNA and the final histopathology report. A total of 325 patients satisfied the eligibility criteria and were included in this study. The sensitivity and specificity, positive predictive value, and negative predictive value of the modified MSRSGC were 64.18