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目的 探讨周围型肺癌瘤周高分辨率CT(HRCT)的的影像分布特征及诊断价值。方法 分析病理确诊的 37例周围型肺癌的瘤周HRCT的影像分布特征 ,并随机选择 2 3例肺良性结节作对照。双盲法观察肺结节瘤 -肺交界区向心侧 (近端 )和离心侧 (远端 )HRCT的表现 :①模糊或 /和毛糙 ;②毛刺影 ;③光整。寻找其分布特征 ,确定 3种HRCT表现、分布特征及肺段水平支气管改变与良、恶性肺内结节的关系。结果 瘤 -肺交界区HRCT表现为远端模糊或 /和毛糙、毛刺影 ,周围型肺癌 79% ,肺良性结节 2 2 % (Ρ <0 .0 5) ;光整 ,周围型肺癌 1 4 % ,良性结节 74% (Ρ <0 .0 5) ,部分病例可同时具有两种或两种以上HRCT征象。周围型肺癌肺段水平支气管阻塞、狭窄发生率明显高于良性病灶 (Ρ <0 .0 5)。结论 瘤 -肺交界区HRCT的模糊或 /和毛糙、毛刺影等影像改变的不对称性远端优势分布 ,对≤ 3 .5cm的周围型肺癌的定性诊断有重要价值。其发生原因与病灶阻塞支气管的通气性有关
Objective To investigate the imaging features and diagnostic value of high resolution CT (HRCT) in peripheral lung cancer. Methods The distribution of peritumoral HRCT in 37 cases of peripheral lung cancer diagnosed by pathology was analyzed and 23 cases of benign pulmonary nodules were selected as control. Double-blind observation of pulmonary nodules - pulmonary junction to the heart (proximal) and centrifugal (distal) HRCT performance: ① fuzzy or / and rough; burr shadow; ③ finishing. To find out its distribution characteristics, to determine the performance of three kinds of HRCT, distribution characteristics and level of lung bronchus and benign and malignant pulmonary nodules. Results The HRCT of the tumor-lung junction showed distant obscure and / or rough, burr shadow, 79% of peripheral lung cancer and 22% of benign pulmonary nodules (P <0.05) %, Benign nodules 74% (P <0.05), some cases can have two or more signs of HRCT. Peripheral lung cancer bronchial obstruction level of lung segment was significantly higher than the benign lesions (P <0.05). Conclusion The distal distribution of the asymmetry of image changes such as blurring and / or roughing and burr shadow in HRCT is of great value in the qualitative diagnosis of peripheral lung cancer ≤ 3.5cm. Its causes and obstruction of bronchial airway permeability related