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The accuracy of fine-needle aspiration cytology for diagnosis of parotid gland masses: a clinicopathological study of 114 patients
Eskilstuna Hospital, Sweden.
Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Anaesthetics, Operations and Specialty Surgery Center, Maxillofacial Unit.
Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Anaesthetics, Operations and Specialty Surgery Center, Maxillofacial Unit.
2016 (English)In: Journal of Applied Oral Science, ISSN 1678-7757, E-ISSN 1678-7765, Vol. 24, no 6, 561-567 p.Article in journal (Refereed) Published
Abstract [en]

Objective: Fine-needle aspiration cytology is a valuable method for preoperative assessment of head and neck tumors. However, its accuracy in detection of salivary gland masses is controversial compared with other methods. The aim of this work was to evaluate the effectiveness and accuracy of fine-needle aspiration cytology (FNAC) in the diagnosis of parotid gland masses. Material and Methods: Over a 10-year period, 126 parotid gland masses were resected. Retrospective chart reviews of 114 patients were performed. The results of FNAC and final histological diagnosis were compared and the accuracy of FNAC was determined. Results: Final histological evaluation revealed 11 malignant tumors and 103 benign lesions. Pleomorphic adenoma was the most common neoplasm (63%), followed by Warthins tumor (17.5%). The sensitivity of FNAC in detecting malignant tumors was 73% and the specificity was 97%. Positive predictive value (PPV) was 73% and negative predictive value (NPV) was 97%. The overall accuracy of FNAC in detecting parotid masses was 95%. False-negative diagnosis was found in mucoepidermoid carcinoma, acinic cell carcinoma, and epithelial-myoepithelial carcinoma whereas there was false-positive diagnosis in cases of pleomorphic adenoma and normal parotid gland tissue. Conclusion: FNAC is a reliable minimally invasive diagnostic method with a high sensitivity in diagnosis of lesions in parotid glands. The sensitivity of detection of malignant tumors in parotid glands was low due to the biopsy technique used, and depended on tumor location. Postoperative complications decreased after superficial parotidectomy.

Place, publisher, year, edition, pages
UNIV SAO PAULO FAC ODONTOLOGIA BAURU , 2016. Vol. 24, no 6, 561-567 p.
Keyword [en]
Fine-needle; Citology; Parotid disease; Diagnosis; Biopsy
National Category
Dentistry
Identifiers
URN: urn:nbn:se:liu:diva-134998DOI: 10.1590/1678-775770160214ISI: 000392840800004OAI: oai:DiVA.org:liu-134998DiVA: diva2:1078754
Note

Funding Agencies|Department of Oral and Maxillofacial Surgery, Linkoping University Hospital, Sweden; Department of Otorhinolaryngology, Eskilstuna Hospital, Sweden

Available from: 2017-03-06 Created: 2017-03-06 Last updated: 2017-03-20

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