Parotis Kitlelerinin Teşhisinde İnce İğne Aspirasyon Biyopsisinin Rolü

Objective: The aim of this study is to determine the accuracy and usefulness of fine needle aspiration biopsy(FNAB) in the diagnosis of parotid masses. Materials and Methods: FNAB findings of 123 patients who were operated over a last ten years period were retrospectively analyzed and compared with histopathological findings. We examined the sensitivity, the specificity, the positive predictive value (PPV), the negative predictive value (NPV) of FNAB. Results: FNAB results of the patients who participated in the study are as follow; non-diagnostic for 7 patient (%5.7), atypia of undetermined significance for 7 patients(%5.7), bening neoplasm for 98 patients (79.7%) and malign cytology for 11 patients (%8.9). Histopathological results were maligned found in 1 out of 98 patients with benign neoplasm in cytology results in FNAB. The histopathological result was benign in 2 of 11 patients with malignant neoplasm in the cytology findings with FNAB. The specificity of FNAB in the diagnosis of parotid masses was found as 98% and the sensitivity was 90%. The positive predictive value (PPD) was detected as 86% and the negative predictive value was detected 98%. Conclusion: Since malignant masses of the parotid are rare and diverse, diagnosis with FNAB can be difficult. Another complicating factor is the similarity of low-grade malignant tumor and benign tumor. As a result, FNAB has high accuracy for benign parotid tumors, but low for malignant parotid tumors.