頸部膿瘍を契機に発見された副咽頭間隙基底細胞腺腫の1症例

A case of basal cell adenoma in parapharyngeal space

Ⅰ．はじめに

　基底細胞腺腫（basal cell adenoma）は基底細胞類似構造を示す腺腫の一種で，その発生頻度は唾液腺腫瘍の2％程度とされている^1）。本腫瘍で耳下腺由来のものは若干症例数が多いが，副咽頭間隙に発生したとの報告はほとんどない。今回われわれは，頸部膿瘍を契機に偶然に発見された副咽頭間隙発生の基底細胞腺腫の1症例を経験したので文献的考察を加えて報告する。

　Basal cell adenoma has been added to classification of salivary gland tumor by WHO in 1991. Most cases develop in the major salivary glands,especially in the parotid glands,while those in the parapharyngeal space are rare. A 75-year-old man was incidentally found basal cell adenoma in the parapharyngeal space when he was treated for contralateral deep neck abscess. The patient was treated surgically and showed no evidence of tumor recurrence at one year and 8 months after the operation.