Sputum: Description, Appearance, Types
Brief overview What is sputum? Secretion from the airways when coughing What does sputum look like? e.g. white or colorless and clear (e.g. in COPD, asthma, cystic fibrosis), yellow-greenish and cloudy (e.g. in purulent angina, scarlet fever, pneumonia), brownish to black (e.g. in smokers) or bloody (e.g. in lung cancer). Cause: Natural cleansing process of … Sputum: Description, Appearance, Types