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Here a typical lobar consolidation.
First study the images, then continue reading.
The findings are:
increased density with ill-defined
Here a typical lobar ... lung the heart silhouette ... air-bronchogram Lobar ... in Klebsiella pneumoniae ... AirBronchogram #LLL #Lobar
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
Lobar pneumonia ... most likely a lobar ... This was an acute lobar ... pneumonia caused ... AirBronchogram #RUL #Lobar
The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
PA-film shows a silhouette ... consolidation due to a pneumonia ... Sterptococcus pneumoniae ... Radiology #CXR #Pneumonia
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
, Cryptococcal pneumonia ... Aspergillus Pneumonia ... and dyspnea • Lobar ... - 20% of pneumonias ... infiltrates or lobar
Lobar consolidation
The most common presentation of consolidation is lobar or segmental.
The most common diagnosis is lobar
Lobar consolidation ... consolidation is lobar ... common diagnosis is lobar ... pneumonia. ... Pulmonary #CXR #Lobar
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
- Lobar or focal ... For instance a lobar ... pneumonia caused ... are organizing pneumonia ... Consolidation #Lobar
Characteristics of Selected Pneumonias

Streptococcus pneumoniae (pneumococcus). Gram-positive diplococci. 
Haemophilus influenzae. Pleomorphic gram-negative coccobacilli. 
Staphylococcus aureus. Plump
Characteristics of Selected Pneumonias ... Streptococcus pneumoniae ... Klebsiella pneumoniae ... Mycoplasma pneumoniae ... #Pneumonia #Patterns
PA view
On the PA chest-film it is important to examine all the areas where the lung
Silhouette - for ... instance the normal silhouette ... These lines and silhouettes ... of the normal silhouette ... is called the silhouette
Community Acquired Pneumonia (CAP) - Microbiology
 • Typicals: Strep pneumoniae, H influenzae, Moraxella catarrhalis, Staph aureus,
Community Acquired Pneumonia ... Typicals: Strep pneumoniae ... Legionella, Mycoplasma pneumoniae ... , Chlamydia pneumoniae ... Community #Acquired #Pneumonia
More common & convincing pneumonia mimics 

Aspiration pneumonitis, 
Pulmonary vasculitis, 
Acute eosinophilic pneummia,  
Cryptogeric organizing
common & convincing pneumonia ... Acute eosinophilic pneummia ... Cryptogeric organizing pneumonia ... PIP), Fungal pneumonia ... Pulmonary Emboli #Pneumonia