The body produces mucus, also known as phlegm or sputum, to protect sensitive tissues in the airways. Changes in the sputum color, thickness, or quantity of phlegm may indicate a health problem, such ...

Lung cancer is the leading cause of cancer mortality rate worldwide, mainly because of the presence of metastatic disease at the time of diagnosis. Early detection of lung cancer improves prognosis, ...

A sputum culture is a sample of the gooey substance that often comes up from your chest when you have an infection in your lungs or airways. It is mostly made up of white blood cells that fight ...