上咽頭軟骨肉腫の1症例

　はじめに

　上咽頭に発生する悪性腫瘍は大きく癌腫と肉腫に分れる。なかでも上咽頭に原発する肉腫は非常に稀れなものである。我々は上咽頭に原発した軟骨肉腫を経験しその発生部位，治療法，病理組織像に関して興味ある所見を得たので報告し，併せて最近30年間本邦及び外国の耳鼻咽喉科領域で発表された軟骨肉腫20例についての文献的考察を試みた。

A case of chondrosarcoma of the nasop harynx in a 32 year old male clerk is reported.

The patient was referred to our clinic with complaints of swelling in the right parotid region, difficulty in opening the mouth and pain with mastication.

X-ray irradiation of total 8,000γ was given to the right parotis region without any seeming beneficial effects.

Operation revealed a tumor the size of a hen's egg arising from the nasopharynx and extending to the oropharynx which was removed.

A review of literature showed 20 cases of chondrosarcoma that had be reported in that of Japan and foreign countries.