Clinical parotid tumor analysis

Moro Yorihisa, Yamauchi Kohichi, Kogashiwa Yasunao, Nagafuji Hiroshi, Nakamura Takehiro, Morita Masahiro, Yokoi Hidenori, Karaho Takehiro, Kohno Naoyuki

doi:10.5106/jjshns.23.93

We retrospectively reviewed 99 consecutive cases of parotid carcinoma who underwent an operation in the past 5 years. The subjects were 56 males and 43 females. Of the 99 cases, 89 were benign and 10 were malignant tumor. Pathological examination demonstrated that the most common type of benign tumor was pleomorphic tumor in 48 cases, followed by Wartin tumor in 28 cases. The most common malignant tumor was salivary duct carcinomal in 3 cases, followed by adenoid cystic carcinoma and acinic cell carcinoma in 2 cases, mucoepidermoid carcinoma, myoepithelial carcinoma and squamous cell carcinoma in 1 case, respectively. The results of preoperative fine-needle aspiration cytology were compared with postoperative pathologic findings. Sensitivity for malignancy was 50%, specificity was 100%, and accuracy was 94%. For the benign tumors, we performed parotidectomy. Total parotidectomy was carried out for the patients who had been diagnosed with malignant tumor by preoperative fine-needle aspiration cytology. For cases with a diagnosis of permanent postoperative malignant specimens had been taken of any policy of careful observation or additional treatment to consider each case. Transient facial palsy was observed as a complication in 4.4% of the patients. Salivary fistula was observed as a complication in 2.2% of the patients. None of the cases had Frey's syndrome as a postoperative complication. Postoperatively, recurrence of the malignancy was not found. The median follow-up duration for cases with malignant tumors was two years.

Clinical parotid tumor analysis

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