Cystic lesions of parotid glands

• Published in: JOURNAL OF JAPAN SOCIETY FOR HEAD AND NECK SURGERY Vol. 25; no. 1; pp. 1 - 7
• Main Authors: Yamada, Koichiro, Tanaka, Shinzo, Hiratsuka, Yasuyuki, Kumabe, Yohei, Watanabe, Yoshiki, Yoshida, Takao, Yoshimatsu, Masayoshi
• Format: Journal Article
• Language: Japanese
• Published: JAPAN SOCIETY FOR HEAD AND NECK SURGERY 30.06.2015
• Subjects: cystic lesion; fine-needle aspiration (FNA); frozen section diagnosis (FSD); parotid gland
• ISSN: 1349-581X; 1884-474X
• DOI: 10.5106/jjshns.25.1

Objectives: Fine-needle aspiration (FNA) and frozen section diagnosis (FSD) are commonly used as the assessment of parotid gland lesions. The aim of this study was to evaluate the diagnostic value of FNA and FSD for cystic lesions of parotid glands. Materials and Methods: We enrolled 48 patients who had undergone operations for cystic lesions of parotid glands in Osaka Red Cross Hospital during a 10-year period between April 2004 and March 2013. The accuracy, sensitivity and specificity of FNA and FSD were studied. Results: Of 48 lesions, 33 were benign tumors, 7 were malignant tumors, and 8 were nonneoplasms. Malignant tumors consisted of mucoepidermoid carcinomas, epithelial-myoepithelial carcinomas, acinic cell carcinoma, carcinoma ex pleomorphic adenoma and low-grade cribriform cystadenocarcinoma. In matters of FNA, the accuracy, sensitivity and specificity for the diagnosis of malignancy were 78%, 20% and 100%, respectively, whereas of FSD, the accuracy, sensitivity and specificity for the diagnosis of malignancy were 89%, 43% and 98%, respectively. Conclusions: Cystic lesions of parotid glands decrease the sensitivity of FNA and FSD.