Pneumonia refers to the inflammation of the ultimate trachea, bronchi, and pulmonary interstitium. It can be caused by pathogens, viral infection, bacteria, flukes, and other pathogenic microorganisms, as well as physical and chemical factors such as radiation and inhaled foreign bodies. The clinical symptoms are fever, cough, expectoration with sputum, sputum with blood, and may be accompanied by chest pain or dyspnea. What are the main manifestations of pneumonia CT?

What are the main manifestations of pneumonia CT

Small nodule shadows

Commonly seen in parainfluenza virus, also visible in bacteria, bacterial infection. The disease is generally 5-6 mm, edges are relatively blurred, more in the middle and lower lung fields, and can coexist with small lobe or small lobe diseases.

Small spot-like or spot-like combination shadows

This can be seen from various causes of pneumonia. Diameter is 1.0-2.5 cm, edges are blurred. Patchy shadows can be combined, and the general main manifestation is: more below than above, more inside than outside, more behind than in front.

Lung segment and apical lobe black shadows

Common in bacterial infection, also visible in parainfluenza virus and coccidioidomycosis infection. Large areas of实变, bounded by segments or lobes of the lung, volume does not decrease, there is bronchitis inflation sign inside, the edges are often pale, blurred.

Streaky and reticular structural black shadows

This sign is commonly seen in radiation pneumonia, chronic pneumonia, interstitial pneumonia, and the digestion and absorption period of pneumonia. The disease is dominated by proliferation, and it can also be combined with actual bronchitis. The main manifestation is spot-like irregular streaky mixed shadows. The edges can be clear or blurred.

Spherical black shadow

Common in orange-yellow Staphylococcus aureus pneumonia, fungal pneumonia, inflammatory pseudotumor. Orange-yellow red grape ball

Bacterial pneumonia, multiple or spherical shadows in the pleural cavity, commonly seen with clear edges of 1-3 cm, relatively uniform density, enhancement is around the periphery, but very easy, and often combined with cracks: fungal pneumonia is cystic and granulomatous, transforming slowly; inflammatory pseudotumor, of various sizes, edges can be smooth, frayed, enhancement can be uniform or mixed enhancement.

Crack

Commonly seen in purulent pneumonia or fungal pneumonia. There is a ring-shaped transparent area, which can be clear or blurred. The wall can be thick or thin. Often accompanied by spot-like blurred shadows or small nodule shadows.

Pleural lesion

The combined blood clot, the thickening part of the pleura in the middle and late stage thickens.