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[病例]男,28岁.无明显诱因而于入院前4个月左耳流黄色水样物,继而出现左耳右上方肿胀.在当地医院切开排脓2ml而自愈.因可疑胆脂瘤型中耳炎而收入院治疗.既往无中耳炎及局部外伤史.入院后检查,左耳廓无畸形,外耳道干净,鼓膜完整.左耳后发际内皮肤有瘢痕,触之凹陷.乳突X光片显示颞骨有一个直径约1.5cm的圆形密度减低区,边缘清楚.纯音测听及声阻抗无异常改变.局麻下手术,发际内瘢痕处切开,暴露颞骨后见有骨质缺损,破坏区域大小与X光片显示相符.其内充满结缔组织样物,实质性,无包腹.分离后完整取出,见颞骨残留一个1.5cm×2.0cm×1.0cm空腔,基底已暴露硬脑膜,用带蒂颞肌充填空腔。病理报告:纤维组织胶原化,其内有少量炎细胞及血管.
[Case] Male, 28 years old. There was no obvious incentive to flow yellow water samples left ear 4 months before admission, followed by swelling of the left ear and upper right. Otitis media and income hospital treatment .Previous absence of otitis media and history of local trauma.After admission examination, no deformity of the left auricle, external auditory canal clean, eardrum intact .After the left ear hair on the inner skin with scars, touch depression .Pattern X-ray The temporal bone showed a circular densitization zone with a diameter of about 1.5 cm and a clear edge.The pure tone audiometry and acoustic impedance had no abnormal changes.After operation under local anesthesia, the scar within the hairline was incised and the bone defect was seen after the temporal bone was exposed , The destruction of the size of the area consistent with the X-ray showed that its full of connective tissue samples, substantial, without abdomen removed completely removed after the separation, see the temporal bone left a 1.5cm × 2.0cm × 1.0cm cavity, the substrate has been exposed hard The meninges fill the cavity with the pedicled temporalis muscle. Pathology Report: Collagen fibrosis, which has a small amount of inflammatory cells and blood vessels.