DIAGNOSTIC VALUE OF FINE NEEDLE ASPIRATION BIOPSY IN PAROTID MASSES
1Ankara Numune Eğitim ve Araştırma Hastanesi, KBB, Ankara, Türkiye2Ankara Numune Eğitim ve Araştırma Hastanesi, Patoloji, Ankara, Türkiye
3Kahramankazan Devlet Hastanesi, KBB, Ankara, Türkiye Objective: To investigate the diagnostic value of fine needle aspiration biopsy (FNAB) in the differential diagnosis of parotid gland masses.
Methods: The results of preoperative FNAB results and postoperative histopathological evaluation of 126 patients who were operated for the parotid gland mass between 2008-2018 were compared. Sensitivity, specificity, accuracy, positive and negative predictive values of FNAB were calculated.
Results: FNAB results were malignant (19.8%) in 25 patients, benign in 72 patients (72.3%), inadequate material in 10 patients, and non-diagnostic (7.9%) in 10 patients. The final histopathological results were malignant (21.4%) in 27 patients and benign (78.6%) in 99 patients. Twenty-six (66.6%) of 27 patients with histopathologically diagnosed as malignant were reported to have malignancy. In 99 (87.8%) of 99 patients with histopathologically diagnosed as benign, FNAB was reported as benign. When the FNAB results of 126 patients were considered in total, the result of 87 were true negative, 4 result as false negative, 18 result as true positive, 7 result as false positive. The sensitivity for FNAB was 81%, specificity was 92.5% and accuracy was 83.3%. The positive predictive value was 72% and the negative predictive value was 95.6%.
Conclusion: FNAB is an effective and safe diagnostic method for the preoperative diagnosis of parotid gland masses.
Keywords : Fine needle aspiration biopsy,histopathology,parotid gland