先天性支气管闭锁的CT诊断

CT diagnosis of congenital bronchial atresia

目的分析先天性支气管闭锁的CT特征,提高诊断准确性。方法回顾性分析7例经随访证实的先天性支气管闭锁病例的CT资料,提出特征性表现,并总结成像技术对征像显示和诊断的价值。结果7例均有典型"三联征"(支气管粘液栓、连续的含气腔隙和邻近肺气肿),薄层扫描结合三维重建显示最好,常规横断面对含气腔隙显示欠佳(4/7),多层CT显示蝌蚪征有利于诊断。结论先天性支气管闭锁有特征性CT表现,现代MDCT薄层扫描结合重建可以帮助有效显示征像并正确诊断。

Objective To analyze the CT characteristics of congenital bronchial atresia （CBA） and improve the diagnostic accuracy. Methods CT features of seven patients with CBA confirmed by follow-up were respectively reviewed. The value of the imaging technique for detecting the features and diagnosing was also evaluated. Results Triad sign （mucus plug, continuous airspace, and neighboring emphysema） was showed in all 7 eases. Thin section combined with three-dimensional reconstruction could best demonstrate the features. The routine axial section could not show the airspace completely （4/7）. Conclusion The congenital bronchial atresia showed specific CT findings and thin section scanning with modem MDCT and rendering technique could reveal the signs and help to make correct diagnosis.