【摘要】 目的提高对显微镜下多血管炎(MPA)胸部 CT 表现的认识。方法回顾性分析5例明确诊断的 MPA 胸部 CT 资料。所有病例均行胸部常规 CT 检查,其中4例行高分辨率 CT(HRCT)扫描。结果胸部 CT 主要表现为磨玻璃影3例,实变影2例,纤维化2例,肺大泡3例,胸膜增厚3例,胸腔积液2例,胸内淋巴结增大3例;外周型为主3例,中央型及无明显区域分布各1例。2种及以上肺部病变并存4例。肺部病变合并纵隔淋巴结增大的3例。结论 MPA 胸部 CT 无特异性,主要表现为磨玻璃影,明确诊断需结合临床、影像表现和实验室检查。更多还原

【Abstract】 Objective To improve identification with regard to chest CT appearances of microscopic polyangiitis(MPA).Methods Five cases of MPA were retrospectively analyzed by comparing chest CT findings with clinical results.Routine chest CT scanning was performed in 5 cases with HRCT scanning in 4 cases.Results The main chest CT manifestations of MPA were ground-grass attenuation found in 3 cases. Other abnormalities included consolidation(n=2),fibrosis(n=2),emphysema(n=3),pleural thickening(n=3),pleural effusion(n=2),lymph node swelling(n=3).The predominant zonal distribution was the peripheral zone in 3 cases,central distribution in one case,and a random distribution in one case.Two or more pulmonary abnormal findings co-existed in 4 cases.The pulmonary lesions co-existed with mediastinal adenopathy in 3 cases.Conclusions The most common CT findings of MPA were ground- glass attenuation followed by consolidation and fibrosis in the peripheral lung.These findings were nonspecific.The diagnosis of MPA needs combine clinical feature,imaging findings and examinations, especial perinuclear antineutrophilic cytoplasmic antibody(p-ANCA)positive.更多还原