Lung consolidation

Introduction Consolidation of lung refers to a disease caused by accumulation of serum, fibrin and cellular components in the alveolar cavity for any reason, which reduces the alveolar air volume and densifies the lungs. The lung volume generally does not change (not shrinks) and can be slightly increased. Lung consolidation is not a disease, but a clinical sign. Common in the acute inflammation of the lungs, such as lobar pneumonia, SARS and so on. A variety of damage factors such as pathogenic microorganisms, parasites, physical and chemical factors, etc. cause lung tissue inflammation, resulting in pulmonary vasodilation, increased blood flow and increased vascular permeability, plasma and leukocytes exuded from the blood vessels to the lung parenchyma, can cause lung change.

Cause

1. A variety of damage factors such as pathogenic microorganisms, parasites, physical and chemical factors, etc. cause lung tissue inflammation, resulting in pulmonary vasodilation, increased blood flow and increased vascular permeability, and plasma and leukocytes exudate from the blood vessels to the lung parenchyma, which can cause The lungs are solid.

2, abnormal immune response, leading to alveolar capillary basement membrane damage, increased permeability, causing lung consolidation.

3, pulmonary circulatory disorder caused by increased hydrostatic pressure in the pulmonary capillaries, increased capillary permeability, or pulmonary lymphatic obstruction can cause increased alveolar or interstitial fluid, early interstitial pulmonary edema, advanced Alveolar pulmonary edema.

an examination

Related inspection

Cardiopulmonary exercise test (CPET) pulmonary ventilation function lung volume

1, medical history

(1) Age.

(2) Past medical history.

(3) History of exposure, especially the history of the epidemic area.

2, accompanying symptoms

Chill, high fever, chest pain, cough and rust color sputum suggest lobar pneumonia; high fever, cough, large pus sputum may be lung abscess; afternoon low fever, night sweats, weight loss, blood stasis may be tuberculosis; sudden chest pain, hemoptysis, palpitation, breathing The difficulty may be pulmonary infarction.

3, accompanying signs

Acute disease, cold sores, more common in lobar pneumonia, lip cyanosis, respiratory distress, suggesting acute respiratory distress syndrome, facial butterfly erythema suggestive systemic lupus erythematosus, interphalangeal joint deformity may be rheumatoid arthritis, heart sounds Enlargement, the second heart sound hyperthyroidism in the aortic valve auscultation area, can be seen in pulmonary infarction, tachycardia, galloping, extensive lung wet rales in both lungs can be seen in cardiogenic pulmonary edema.

Differential diagnosis

Differential diagnosis

The difference between lung consolidation-lung atelectasis and pulmonary consolidation imaging:

Atelectasis: The trachea is pulled toward the affected side, the lateral sac is raised, and the normal lung tissue is compensated emphysema.

Lung consolidation: the trachea is pushed to the healthy side without lifting.

The shape of the two is different between different segments.

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