Although patients with COPD typically present with productive cough, the sputum is mucoid, and macrophages are the predominant cells. During an exacerbation, mucus can become purulent because of the presence of neutrophils.
The classic clinical manifestation of bronchiectasis is cough with daily mucopurulent sputum production that often lasts for years. Blood-streaked sputum may be present from years of airway damage associated with acute infection.
Learn more about the presentation of COPD.
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Cite this: Zab Mosenifar. Fast Five Quiz: Differential Diagnosis of Chronic Obstructive Pulmonary Disease (COPD) - Medscape - Feb 04, 2022.