What does "infiltrated" mean regarding lung health?

The term "infiltrated," in the context of lung health, specifically refers to the presence of an abnormal accumulation of fluid or other substances within the lung tissue. This can occur for various reasons, including infection, inflammation, or the presence of tumors. When lung tissue is infiltrated, it often indicates that there is fluid filling the spaces around the alveoli—these are the tiny air sacs where gas exchange occurs. This condition can lead to impaired respiratory function and oxygen exchange, highlighting the seriousness of such a diagnosis.

The other options do not accurately capture the meaning of "infiltrated" within the context of lung health. Rather than indicating a healthy status or normal functioning of the lungs, infiltrated specifically points to a pathological condition that requires clinical attention and management. Understanding this terminology is important for recognizing the implications it has on patient care and treatment planning in a medical setting.