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继续视频学习CT解剖。 支气管解剖变异很多，所以，需要看各种不同的胸部CT，才能大体掌握支气管CT解剖。 变异最多的是尖后段，下叶基底段支气管。 先上视频，视频解说似乎更好学习CT。 下面是读书笔记，小伙伴们可以略过。 In 0.1 to 5% of people there is a right superior lobe bronchus arising from the main stem bronchus prior to the carina. 0.1 to 5%的人，右肺上叶支气管的起源位置，在隆突之上。右肺上叶支气管仍然从右主支气管发出。 This is known as a tracheal bronchus, and seen as an anatomical variation. 这就是传说中的气管支气管，是一种解剖变异。 It can have multiple variations and, although usually asymptomatic, it can be the root cause of pulmonary disease such as a recurrent infection. 变异很多，一般是没有症状的，这种变异有时候是反复肺部感染的根源。 In such cases resection is often curative. 这时候，切除变异支气管可治愈肺部感染。 The cardiac bronchus has a prevalence of ≈0.3% and presents as an accessory bronchus arising from the bronchus intermedius between the upper lobar bronchus and the origin of the middle and lower lobar bronchi of the right main bronchus. 副心支气管，又称心支气管、肺底心段副支气管等,较为罕见， ≈0.3%。起源位置：英文太啰嗦复杂，没有条理，看不懂。 副心支畸形为重复型畸形，起自主支气管或中间支气管的内侧壁，朝向心脏。 Accessory cardiac bronchus is usually an asymptomatic condition but may be associated with persistent infection or hemoptysis. 一般没有症状，也可引起反复的肺炎，或者咯血。 In about half of observed cases the cardiac bronchus presents as a short dead ending bronchial stump, in the remainder the bronchus may exhibit branching and associated aerated lung parenchyma. 有一半的患者，心支气管是一个短的盲端，可有分支与肺组织想通。 |
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