当科における副咽頭間隙腫瘍の検討

Statistics of parapharyngeal space tumors in our clinic

Ⅰ．はじめに

　副咽頭間隙腫瘍は頭頸部腫瘍の0.5％と稀であり，摘出が容易でなく，術後合併症をきたすことがあるとされている^1）。今回，過去14年間に当科で経験した副咽頭間隙腫瘍について臨床的に検討したので報告する。

　We reviewed twenty（eleven males and nine female） parapharyngeal space tumors that we experienced in the past fifteen years at Mie University Hospital. The ages of patients ranged from 9 months to 73 years old（mean 54 years old）. Pharyngeal discomfort was the most common initial symptom. The dominant diameter of the tumors was from 40 mm to 60 mm. Midline mandibulotomy was used in seven patients. The cervical-parotid approach, cervical approach, and oral approach was applied in 5, 5 and 2 patients, respectively. Postoperative loss of nerve function was observed in three patients, and midline mandibulotomy was performed in two of the three. Of the 20 tumors, 16 were benign lesions and 4 malignant neoplasms. Pleomorphic adenoma（n＝8） and neurinoma（n＝5） dominated among the benign tumors. The four malignant neoplasms were carcinoma in pleomorphic adenoma, adenoid cystic carcinoma, squamous cell carcinoma and salivary duct carcinoma.