側頭骨の透過性陰影を示した2症例の比較検討
嚢胞と巨細胞腫
1990 年 17 巻 2 号 p. 75-79
詳細
1990 年 17 巻 2 号 p. 75-79
A radiolucent shadow on plain X-ray films of the temporal bone was observed in two patients who complained hearing disturbance due to obliteration of the external auditory meatus.
In a case of a huge cyst of the mastoid, there were a round translucency on a plain film and a round cavitation with fluid level on a CT film. The cyst was located in the posterior part of the temporal bone and the cyst was suspected to be formed by a blockage of the aditus ad antrum.
In the other case, a large giant cell tumor showed a lobulated translucency on a plain film and a large mass with defect of the head of mandible on a CT film. The mass was recognized in the antero-posterior part of the temporal bone, and this tumor was suspected to be originated from the head of mandibule.
