肺炎性结节30例CT分析

CT diagnosis of pulmonary inflammatory nodule

目的:探讨肺炎性结节的CT征象与鉴别诊断。方法:回顾性分析经手术及病理证实的肺炎性结节病例30例,其中单发28例,多发2例。共33个结节。结果:①病变部位:结节位于两肺下叶基底段15个,背段8个,上叶后段(尖后段)3个,前段1个;中叶(舌叶)6个,均邻近胸膜。②CT征象:病灶呈类圆形30个,不规则形3个。其中密度均匀26个,支气管充气征5个,空洞2个,边缘光整16例,有粗长毛刺8例,边缘模糊似短毛刺或棘状突起5例,分叶4例,垂直于胸膜的刀切样边缘13例,局部胸膜增厚粘连18例,胸膜尾征16例。结论:全面分析CT征象能提高肺炎性结节的正确诊断率。

Objective：To explore CT features and differential diagnosis of pulmonary inflammatory nodule. Methods： Thirty cases with pulmonary inflammatory nodule which were proved pathologically after surgery were included Single nodule were detected in 2 patients and multiple nodules were detected in 28 respectively, 33 lesions were identified in 30 patients. Results： （1） Location： 15 lesions in basal and 8 lesions in dorsal segment of lower lobe; 3 lesion in posterior or tip-posterior and 1 lesion in anterior segment of upper lobe; 6 lesions in middle lobe or lingual segment, the lesions were always near the pleura; （2） CT findings： the round shape in 30, and irregularity shape in 3; homogeneous density in 26; air bronchi sign in 5; cavity in 21; smooth margin in 16; long and thick bur in 8; short bur in 4 lesions; perpendicular to pleura with a straight cut edge in 13; the local plural thickening and adhesion in 18 lesions; 16 lesions had pleural tail sign . Conclusion： Analyzing different CT findings could improve diagnostic accuracy.