偶尔可见的紧贴支气管的小血管致密影是支气管动脉而不是肺动脉。

Occasionally, the tiny vascular opacity abutting a bronchus is a bronchial, rather than a pulmonary, artery.

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结果18例中，5例呈小灶致密影，6例出现局部结构紊乱，7例显示为星芒征。

Results Among 18 patients, 5 cases showed small focus of increased density, 6 cases had focal architecture distortion, 7 cases demonstrated star sign.

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