Striate shadows are mostly referred to as streaks in the lungs, which may be due to inflammation or may be caused by scarring. Striated lesions in the lungs usually show a high-density striated shadow, which is an imaging change. When these changes are found, it is possible that the old lesion has not been fully absorbed and left behind lung damage that exhibits a striated shadow. Bronchodilatation may also be present. In some cases of bacterial or viral pneumonia, the lung lesions may not be fully absorbed after treatment and may leave behind striated lesions. Particularly, the middle lobe of the right lung or the lingual segment of the left lung shows incomplete absorption of chronic infection. When streak-like shadows in the lungs are found, regular observation may be necessary, due to the fact that a small number of people develop scarring carcinoma on top of scarring in the lungs.