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Explain of Pulmonary Pathology

61.Lung, chronic bronchitis, medium power microscopic

This photomicrograph demonstrates a bronchus with increased numbers of chronic inflammatory cells in the submucosa. Chronic bronchitis does not have characteristic pathologic findings, but is defined clinically as a persistent productive cough for at least three consecutive months in at least two consecutive years. Most patients are smokers. Often, there are features of emphysema as well.

（本图片资料来源自美国犹他大学）