Value of Fine-Needle Aspiration Cytology of Parotid Gland Masses

Objective To evaluate the usefulness and accuracy of fine‐needle aspiration cytology (FNAC) in the diagnosis of parotid gland masses. Study Design Retrospective chart review of patients undergoing FNAC. Methods Between January 1990 and December 1998, 410 parotid glands were resected at the Departmen...

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Bibliographic Details
Published in:The Laryngoscope 2001-11, Vol.111 (11), p.1989-1992
Main Authors: Zbären, Peter, Schär, Catherine, Hotz, Michel A., Loosli, Heinz
Format: Article
Language:English
Subjects:
Biological and medical sciences
Biopsy, Needle
Ent. Stomatology
Female
Fine-needle aspiration
Humans
Investigative techniques, diagnostic techniques (general aspects)
Male
Medical sciences
Middle Aged
Otorhinolaryngology. Stomatology
Parotid Diseases - pathology
Parotid Gland - pathology
Parotid Neoplasms - pathology
parotid tumors
Pathology. Cytology. Biochemistry. Spectrometry. Miscellaneous investigative techniques
Preoperative Care
Retrospective Studies
salivary gland tumors
Sensitivity and Specificity
Tumors
Upper respiratory tract, upper alimentary tract, paranasal sinuses, salivary glands: diseases, semeiology
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Summary:Objective To evaluate the usefulness and accuracy of fine‐needle aspiration cytology (FNAC) in the diagnosis of parotid gland masses. Study Design Retrospective chart review of patients undergoing FNAC. Methods Between January 1990 and December 1998, 410 parotid glands were resected at the Department of Otorhinolaryngology–Head and Neck Surgery at the University of Berne, Inselpital (Berne, Switzerland). Included in the study were 228 cases with preoperative FNAC. In a retrospective study the results of FNAC were analyzed and compared with the corresponding histopathological diagnosis. Results Histological evaluation revealed 65 malignant tumors and 163 benign lesions (150 neoplasms and 13 nonneoplastic lesions). The cytological findings were nondiagnostic in 13 (5.7%), true‐negative in 146 (64%), true‐positive in 39 (17%), false‐negative in 22 (9.8%) and false‐positive in 8 (4.5%) cases in detecting malignant tumors. Nineteen of 39 (49%) malignant tumors (true‐positive) and 123 of 146 (84%) benign lesions (true‐negative) were classified accurately. The accuracy, sensitivity, and specificity were 86%, 64%, and 95% respectively. Conclusions Fine‐needle aspiration cytology is a valuable adjunct to preoperative assessment of parotid masses. Preoperative recognition of malignant tumors may help prepare both the surgeon and patient for an appropriate surgical procedure.
ISSN:0023-852X
1531-4995
DOI:10.1097/00005537-200111000-00023