【定义】肺脓肿按定义讲是指在肺已破坏的部分有积脓。因此,引起这种病灶,有很多的可能原因(表63—1)。但是,临床上使用的肺脓肿一词。指的是伴有实质性坏死的肺部感染,一般由细菌而不是分枝杆菌引起的。肺脓肿通常是独个的,但是偶而可见多发的分散的病灶。许多局限于肺的某些部位的小脓肿严格地说来可称为坏死性肺炎,这种情况有时也称为肺坏疽。“原发性”肺脓肿是一个已废弃的名词,因为实际上现在认为所有的肺脓肿都是继发于引入性的。“腐败性”肺脓肿这个名词提示病人的痰液有难闻的臭气,这种脓肿几乎必 [Definition] Lung abscess, by definition, means emptiness in the damaged part of the lung. Therefore, there are many possible causes of this lesion (Table 63-1). However, the term lung abscess is used clinically. Refers to a pulmonary infection with substantial necrosis, usually caused by bacteria rather than mycobacteria. Pulmonary abscesses are usually solitary but occasionally multiple, scattered lesions. Many small abscesses confined to certain parts of the lung are strictly speaking necrotizing pneumonia, which is sometimes called lung gangrene. “Primary” lung abscess is an obsolete term because in practice it is now assumed that all lung abscesses are secondary to introduction. The term “corrosive” lung abscess suggests that the patient’s sputum has an unpleasant odor that the abscess almost always