Lobar Pneumonia Xray and Generalities

1. Lobar Pneumonia Xray and Generalities

2. 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).

3. 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

4. Lobar Pneumonia • Bacterial Causes: • Streptococcus pneumoniae (Most common cause) • Mycoplasma • Gram negative organisms • Legionella

5. Role of X-ray

6. 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.)

7. 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

8. Lung Infiltrates Acinar (usually from bacteria) Interstitial (Viral) same size sharp edges smaller densities • varying in size • indistinct edges • larger, hazy margins, cotton wool

9. 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.

10. Lobar Pneumonia Xray

11. Lobar Pneumonia Xray