Abstract:Objective To investigate the diagnostic accuracy of B-ultrasonography, fine needle aspiration biopsy, and peri-surgical frozen section biopsy in oral salivary glands tumors. Methods Totally 274 cases with salivary gland tumors were involved in this study. B-ultrasonography, fine needle aspiration biopsy and peri-surgical frozen section biopsy were performed in all patients. Diagnostic accuracy of the tools was confirmed with the postoperative histopathological examination. Result The total qualitative diagnostic accuracy of B-ultrasonography was 83.2%, of which the benign tumor and malignant tumor was 85.2% and 73.3%, respectively. The total qualitative diagnostic accuracy of fine needle aspiration biopsy was 87.0%, of which the benign tumor and malignant tumor was 88.6% and 79.2%, respectively. The definite diagnosis rate was 63.8%, of which the benign tumor and malignant tumor was 64.0% and 62.5%, respectively. The total qualitative diagnostic accuracy of peri-surgical frozen section biopsy was 94.9%, of which the benign tumor and malignant tumor was 97.4% and 83.0%, respectively. Conclusions Diagnostic accuracy of peri-surgical frozen section biopsy is satisfactory while the fine needle aspiration biopsy and B-ultrasonography are good pre-surgical diagnostic tools.