The pyogenic infections of the parenchyma of the lung and the bronchi usually are grouped under the general term "pulmonary suppuration." Various subdivisions of the diseases included under this term are made in an attempt to classify them according to their etiology, bacteriology, duration and situation. From a pathologic-anatomic standpoint they may be considered in two groups: that in which the disease is localized in the parenchyma of the lung, resulting in the formation of lung abscess, and that in which the bronchi are the more extensively involved, terminating in bronchiectasis. It is difficult to draw a sharp line of demarcation between abscess of the lung and bronchiectasis by a consideration of the anatomic structure involved, as it is rare for either condition to exist as a distinct uncomplicated entity. In practically every case of abscess of the lung there is a certain amount of bronchial involvement, and in nearly
HARRINGTON SW. THE SURGICAL TREATMENT OF PULMONARY SUPPURATION. JAMA. 1926;87(15):1200–1206. doi:10.1001/jama.1926.02680150034009
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