What diseases can lung CT detect?

When we do a physical examination, we are sometimes asked to do a lung CT scan. Most people do not understand what diseases lung CT can generally detect. In fact, lung CT is generally used to confirm lung diseases and lung diseases are usually required during treatment. This is generally to better understand the condition and avoid delaying the condition. The following specifically introduces what diseases lung CT can detect.

Common symptoms of lung disease

Chronic bronchitis. Chronic bronchitis refers to a chronic lung disease of the trachea, bronchial mucosa and surrounding tissues, a non-specific inflammation. If the patient coughs and produces sputum for more than 3 months each year for 2 consecutive years or longer, and other known causes of chronic cough can be excluded, chronic bronchitis can be diagnosed.

Lung disease emphysema. Emphysema refers to the abnormal and persistent expansion of the distal air spaces of the terminal bronchioles of the lungs, with destruction of the alveolar walls and bronchioles, without obvious pulmonary fibrosis.

Lung disease Chronic obstructive pulmonary disease. The concept of chronic obstructive pulmonary disease is a lung disease characterized by airflow limitation. The airflow limitation is not completely reversible and develops progressively. The exact cause is not very clear, but it is believed to be related to the abnormal inflammatory response of the lungs to harmful substances. Chronic obstructive pulmonary disease is closely related to chronic bronchitis and pulmonary or emphysema. When patients with chronic bronchitis and emphysema show airflow obstruction on pulmonary function tests and it is not fully reversible, they are diagnosed with chronic obstructive pulmonary disease. If their airflow limitation is reversible, they are diagnosed with chronic obstructive pulmonary disease.

The concept of chronic cor pulmonale is that chronic lesions of the bronchi, lung tissue, pulmonary blood vessels or thorax cause abnormalities in the structure and function of the lung tissue, resulting in increased pulmonary vascular resistance and elevated pulmonary artery pressure, right ventricular dilatation or hypertrophy, or heart disease accompanied by right heart failure, and excludes congenital heart disease and left heart lesions.

Lung disease asthma. Asthma is a chronic inflammatory disease of the airways involving multiple cells and cellular components. This chronic inflammation leads to increased airway responsiveness, usually with widespread reversible airflow limitation, and causes recurrent symptoms such as wheezing, shortness of breath, chest tightness or coughing, which can be relieved spontaneously or through treatment. Long-term repeated attacks can cause airway reconstruction and lead to airway stenosis.

Lung disease bronchiectasis. Bronchiectasis refers to the abnormal dilation of medium-sized proximal bronchi with a diameter greater than 2 mm due to destruction of the muscle and elastic tissue of the bronchi wall. The main symptoms are chronic cough, coughing up large amounts of purulent sputum and repeated hemoptysis. Most patients have a history of childhood measles, whooping cough, or bronchopneumonia.

Lung disease Respiratory failure. The concept of respiratory failure is a serious disorder of pulmonary ventilation and gas exchange caused by various reasons, which makes it impossible to maintain adequate gas exchange even in a resting state, leading to hypoxia and hypercapnia, thereby causing a series of physiological functions and corresponding clinical manifestations. At sea level, when breathing air under resting conditions, and excluding intracardiac anatomical shunts and primary new blood output reduction, if the arterial blood pressure is lower than 60mmHg and the partner has or is accompanied by carbon dioxide higher than 50mmHg, it is respiratory failure.

Lung disease pneumonia. Pneumonia affects the lung parenchyma and interstitium and is caused by a variety of pathogens. Other factors such as radiation, chemicals, immunity, allergies, and drugs can also cause pneumonia.

Lung disease Lung abscess. Lung abscess is a purulent infection of the lung caused by a variety of pathogens. In the early stage, it is an infectious inflammation of the lung tissue, followed by necrosis, liquefaction, and abscess formation. The clinical symptoms are high fever, cough, and coughing up purulent and foul-smelling sputum.

Lung disease tuberculosis. Pulmonary tuberculosis is an infectious disease in which Mycobacterium tuberculosis causes lung tissue exudation, collateral necrosis and other proliferative reactions.