PURPOSE: @entity400 ( @entity400 ) is frequently used in the diagnosis of lesions occurring in the head and neck region. This study evaluated the correlation between the findings on @entity400 and the histological findings observed after surgery. MATERIALS AND METHODS: A review of 218 @entity1 who underwent @entity400 of a @entity135 was performed. Cytological reports were classified into the following diagnostic categories: negative or positive for malignant cells and unsatisfactory. False-positive, false-negative, true-positive (sensitivity), and true-negative (specificity) rates were calculated. RESULTS: Twelve specimens did not allow an adequate diagnosis (5.5%). Among @entity5 , 96.2% of the cases were correctly diagnosed, and 3.8% were nondiagnostic specimens. Among @entity5 , 86.4% of cases were correctly identified. There were two (3.4%) false-negatives and six (10.2%) nondiagnostic specimens, with a total false-negative rate of 13.6%. CONCLUSIONS: Sampling errors present a minor problem with @entity400 . Most nondiagnostic or incorrect specimens were caused by nonhomogenous lesions, with poor placement of the needle and an insufficient amount of aspirated material. @entity400 is a useful modality for the diagnosis of head and neck masses.

Accuracy of fine needle aspiration biopsy in XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity135 :: ('MESH:D006258', 'Disease') :: ['head or neck tumor'] @entity400 :: ('MESH:D014202', 'Disease') :: ['FNAB', 'Fine-needle aspiration biopsy'] @entity5 :: ('MESH:D009369', 'Disease') :: ['malignant tumors', 'benign tumors']
@entity135 :: (MESH:D006258,Disease) :: ['head and neck tumors']
