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目的 探讨皮肌炎并发肺部病变的影像学特征。方法 收集本院近两年来收治的 2 8例皮肌炎患者的临床及影像学资料 ,分析其肺部表现、胸部 X线和高分辨 CT(HRCT)的特点。结果 2 8例皮肌炎患者中有明显呼吸道症状的 9例 ,有肺部体征 6例 ;胸部 X线诊断肺部改变 9例 ,阳性率为 32 .2 % ;胸部 HRCT诊断 2 3例 ,阳性率为 82 .2 % ;病程小于或等于 1年的患者阳性率 77.8% (14 /18) ,病程大于 1年的患者阳性率 90 % (9/10 )。结论 胸部 X线、HRCT是诊断皮肌炎伴发肺部病变的有效方法 ;HRCT较胸部 X线的敏感性高 ;随皮肌炎病程进展 ,肺部病变的发生率增加
Objective To investigate the imaging features of dermatomyositis complicated with pulmonary lesions. Methods The clinical and imaging data of 28 patients with dermatomyositis collected in our hospital in the past two years were collected to analyze the features of lung manifestations, chest X-ray and high-resolution CT (HRCT). Results There were 9 cases with obvious respiratory symptoms in 2 8 dermatomyositis patients and 6 cases with pulmonary signs. The chest X-ray diagnosis of pulmonary changes in 9 cases, the positive rate was 32.2%; chest HRCT diagnosis of 23 cases were positive The rate was 82.2%. The positive rate was 77.8% (14/18) in patients with disease duration less than or equal to 1 year and 90% (9/10) in patients with disease duration greater than 1 year. Conclusions Chest X-ray and HRCT are effective methods to diagnose dermatomyositis with pulmonary lesion. HRCT is more sensitive than chest X-ray. With the progress of dermatomyositis, the incidence of pulmonary lesion is increased