患者　女性 ,5 0岁。因右耳前无痛性肿块日趋增大收住院。既往有外伤史。查体 :右耳及颞下部膨隆 ,界线不清 ,质硬 ,活动度差伴张口困难 ,疼痛不明显。全身表浅淋巴结无明显肿大。ＣＴ平扫 :以右耳颞部为中心 ,可见不规则软组织肿块影 ,边缘较清晰 ,似有较完整包膜 ,直径约 4.5 Patient female, 50 years old. Due to the right ear painless mass increasing admission to hospital. Past history of trauma. Examination: swelling of the right ear and the lower part of the temporal, unclear boundaries, hard, poor mobility with mouth pain, pain was not obvious. Whole body superficial lymph nodes without obvious enlargement. CT scan: the right ear and temporal as the center, showing irregular soft tissue mass shadow, the edge more clearly, it seems more complete envelope, a diameter of about 4.5