Lung shadows are commonly seen in lung tumors, tuberculosis, and inflammation of the lungs.
1. Lung tumors include benign and malignant.
(1) Benign ones include malignant tumors, pulmonary hemangiomas, pulmonary smooth muscle tumors and fibrous tumors.
(2) Malignant lung cancer is a malignant tumor originated from respiratory epithelial cells (bronchial tubes, fine bronchial tubes and alveoli). Clinical manifestations include cough, sputum, hemoptysis, emaciation, and X-ray examination reveals the shadow of nodules and masses in the lungs.
2. Chest X-ray examination of pulmonary tuberculosis shows that the lesions mostly occur in the post-apical segment of the upper lobe, the dorsal segment of the lower lobe, or the posterior basal segment, which are polymorphic, with uneven density, clearer edges, and slower change of the lesions. Frontal and lateral chest radiographs are most commonly used for diagnosis.
3. Lung shadows may also be caused by lung inflammation. In the early stage of chest imaging, only thickening of lung texture or less blurring of the involved lung segments or lobes are seen. At this time, it is difficult to distinguish the shadow from the tumor, and it is necessary to carry out anti-infective treatment first and review regularly, and after review, if the shadow disappears, it is caused by inflammation.
It is recommended to actively seek medical advice and follow the doctor’s instructions for medication and treatment.