患者 ,女 ,9岁。主因左颊反复肿胀 1年 ,伴皮肤破溃 5个月 ,于 1999年 1月 2 2日入住我院。患者 1年前无明显诱因出现左颧部约蚕豆大小肿胀区 ,境界不清 ,质地较硬 ,表面无破溃。 3～ 4天后自行消退 ,1周后又复发。此后肿胀规律性发作。曾于外医院拍Ｘ片诊断为上颌窦炎、彩超示 Patient, female, 9 years old. The main left cheek repeatedly swelling 1 year, with the skin ulceration 5 months, January 22, 1999 admitted to our hospital. One year ago, there was no obvious incentive for patients with left zygomatic area about the size of broad bean swollen area, the state is not clear, the texture is hard, the surface without ulceration. 3 to 4 days after subsided, a week later relapse. Regular swelling after the attack. Had taken X-ray film in the hospital for the diagnosis of maxillary sinusitis, color ultrasound show