Source: The Great Interpretation of Dreams (Ibn Sirin)
The lung in a dream is the place of life and breath. Its soundness indicates long life and health. Its illness indicates illness or the approach of one's end.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
The lung indicates a servant or a child.
Source: Signs in the Science of Expressions (Ibn Shaheen)
The lung is interpreted as wealth. Whoever sees it is healthy, his wealth will increase.