Pus forms when the immune system's white blood cells fight an infection. Pus can be different colors and may emit a foul odor if the infection is severe. Larger abscesses usually need to be drained ...

A chest abscess tends to refer to an abscess in the lungs. This also includes abscesses in the muscles of the chest wall, between the lung tissue and the lining of the chest cavity. An abscess is a ...