肺内孤立结节的CT诊断

The CT Diagnosis of Solitary Pulmonary Nodules

目的:旨在提高肺内孤立结节诊断的准确率。材料与方法:回顾性分析41例经过病理证实的肺内孤立结节(直径≤3cm)的CT特征,探讨良、恶性肺内孤立结节的诊断与鉴别诊断指征。结果:结节边缘表现为深分叶、空泡征、毛刺、棘突、脐凹征、血管连接征、胸膜凹陷征或(和)尾巴征,增强CT值强化>20Hu的结节恶性明显高于良性;而边缘光滑、规则、结节内有较多钙化、增强结节呈环形强化或强化CT值<15Hu者良性明显高于恶性。结论:认识良、恶性肺内孤立结节的不同CT特点有助于提高诊断的准确性。

Objective For promoting the CT diagnostic accuracy rate of solitary pulmonary nodules.Materials and Methods The CT specificities of 41 cases solitary pulmonary nodules(diameter≤3 cm)proved pathologically were analyzed retrospectively.Discuss the diagnosis and differential diagnosis signs of benign and malignant mature solitary pulmonary nodules.Results Presence of spiculation,deeplobulation,pleural tages,spiculate protuberance,contrast enhancement of tumor more than 20 Hu,occurred more frequentry inmalignant than benign lesion.Presence of more calcification,margin smoth ring enhancement or contrast enhancement less than 15 Hu of nodule, occurred more freequently in benign than malignant lesion.Conclusion Knowwing the various CT specific signs of benign and malignant mature solitary pulmonaty nodule would help to increase the diagnostic level.