Final answer:
Lung abscesses predominantly contain neutrophils and macrophages. Neutrophils are abundant phagocytic cells that respond first to infection, while macrophages are important for pathogen removal within the alveoli. These cells form the main immune response against pulmonary infections leading to abscess formation.
Step-by-step explanation:
The predominant cells found in lung abscesses are neutrophils and macrophages. Neutrophils are often the first responders at the site of infection or trauma, representing 50-60 percent of all leukocytes. They are crucial because they release toxins that kill or inhibit bacteria and fungi and recruit other immune cells to the site of infection. Macrophages are phagocytic cells within the alveolar walls which remove debris and pathogens from the alveoli.
In the context of lung infections, such as those caused by Streptococcus pneumoniae or Mycobacterium tuberculosis, an inflammatory response is mounted resulting in the accumulation of these immune cells. In abscesses, neutrophils dominate as they are abundant and are among the first to respond to bacterial invasions, often forming pus within the abscess.
An understanding of the cellular makeup of lung abscesses can inform treatment strategies, as these cells play a critical role in both the progression of the abscess formation and the body's immune response to the infection.