What does it mean to have slightly enhanced lung markings?

The lung markings are slightly enhanced on both sides. Normal refers to thickening of bronchovascin on chest radiograph or chest CT. Normal lung markings refer to linear shadows distributed radially outward along the hilum of the lung. Lung markings are composed of related structures such as bronchi and accompanying blood vessels. Therefore, normal is also called bronchovascular bundles. Thickening of bronchial vascular bundles is often seen in bronchial and peribronchial lesions, such as bronchial inflammation, and chronic cardiac insufficiency can sometimes cause interstitial pulmonary edema, which may cause slightly enhanced lung markings. In addition, it should be noted that sometimes patients with pneumonia or bronchiectasis may only show slightly enhanced lung markings on chest X-ray, but chest CT often has characteristic manifestations.