副咽頭間隙神経原性腫瘍の2症例

Two Cases of Neurogenic Tumor in the Parapharyngeal Space

　はじめに

　副咽頭間隙腫瘍は比較的稀な疾患であるといわれてきたが^1〜4），画像診断の発展に伴い報告は増えつつある^5〜7）。また，副咽頭間隙は解剖学的に重要な血管や神経が含まれ，その構造組織の多様性により神経原性，唾液腺由来，リンパ組織由来など多種多様の腫瘍が発生し得る。今回，われわれの施設で経験した副咽頭間隙神経原性腫瘍の2例について，若干の文献的考察を加えて報告する。

Two cases of neurogenic tumor (neurinoma and neurofibroma) in the parapharyngeal space were reported. CT and MRI were usuful for evaluating the extent of these tumors. They were completely removed through an external incision. The postope-rative course was uneventful. Because of palpe-broptosis, we suspected that these tumors had originated from the cervical sympathetic nerve.