The presence of striated shadows in the middle lobe of the right lung refers to the presence of a distribution of scattered patches or striated hyperdense shadows in the low-density lungs that can be seen under imaging. It is mainly associated with pneumonia and pulmonary fibrosis. In pneumonia, there is localized inflammatory material exudation, which is manifested as patchy hyperdense shadows under imaging, and the patchy hyperdense shadows change to striated hyperdense scarred foci after the pneumonia is cured. Pulmonary fibrosis is often characterized by dense, localized, striated fibrotic shadows in the lungs, which can occur with age or after alveolar repair due to inflammatory stimuli. In addition, people who have a history of smoking may also develop ropy shadows in the lungs.