lobar pneumonia xray and generalities l.
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Lobar Pneumonia Xray and Generalities. Lobar Pneumonia. What is it?? It is a form of pneumonia that affects a large and continuous area of the lobe of the lung It is one of the two anatomic classifications of pneumonia (the other being bronchopneumonia). Lobar Pneumonia.

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lobar pneumonia
Lobar Pneumonia
  • What is it??
    • It is a form of pneumonia that affects a large and continuous area of the lobe of the lung
    • It is one of the two anatomic classifications of pneumonia (the other being bronchopneumonia).
lobar pneumonia3
Lobar Pneumonia
  • Symptoms: Usually has an acute progress which can be divided into 4 stages:
    • Congestion in the first 24 hours
    • Red hepatisation or consolidation
    • Grey Hepatisation
    • Resolution
lobar pneumonia4
Lobar Pneumonia
  • Bacterial Causes:
    • Streptococcus pneumoniae (Most common cause)
    • Mycoplasma
    • Gram negative organisms
    • Legionella
role of x ray6
Role of X-Ray
  • Pneumonia is suspected on the basis of a patient's symptoms and findings from physical examination
  • To help confirm the diagnosis usually a chest X-Ray is ordered.
  • Chest x-rays can reveal areas of opacitywhich represent consolidation.
  • Consolidation occurs through accumulation of inflammatory cellular exudate in the alveoli and adjoining ducts. (alveolar space that contains liquid instead of gas.)
role of x ray7
Role of X-ray
  • Infiltrates can be divided in to alveoli and interstitial.
    • Alveloli infiltrate have Ill defined margins, a fluffy apearance, patchy densities, which coalesce
      • Bacterial pneumonia affects lobe & lobule producing alveolar infiltrate
    • Infiltrates outside the sac: can be at interstitium, septum or at the framework
      • In Viral pneumonia has interstitial pattern initially
lung infiltrates
Lung Infiltrates

Acinar (usually from bacteria)

Interstitial (Viral)

same size

sharp edges

smaller densities

  • varying in size
  • indistinct edges
  • larger, hazy margins, cotton wool
slide9

In pneumonia, depending upon the amount and distribution of the airspaces involved, may present as confluent parenchymal (lobar or segmental) opacity or merely patchy opacity. 

  • Air bronchograms would also confirm an alveolar process.