Striated shadows in the lungs are pathological changes in the lungs that are detected by imaging tests, such as x-rays, CT, or even MRI of the lungs. They are usually caused by an infection, such as an infection by a specific pathogen, such as tuberculosis caused by Mycobacterium tuberculosis infection. Mycobacterium tuberculosis causes damage to the mucous membrane of the lung, which heals with varying degrees of scarring, manifested by varying degrees of fibrosis, calcified shadows, and seen as streaky, shadowed lung changes. It is also common to see similar shadows in malignant lesions of the lung, namely bronchopulmonary carcinoma. Generally, pathogenic cultures and pathological examinations can be taken from the streak-like shadows or airway secretions to clarify the cause and provide timely treatment.