287 results
Characteristics of Selected Pneumonias

Streptococcus pneumoniae (pneumococcus). Gram-positive diplococci. 
Haemophilus influenzae. Pleomorphic gram-negative coccobacilli. 
Staphylococcus aureus. Plump
Streptococcus pneumoniae ... Klebsiella pneumoniae ... Mycoplasma pneumoniae ... #Pneumonia #Patterns ... #Presentation #Pulmonary
More common & convincing pneumonia mimics 

Aspiration pneumonitis, 
Pulmonary vasculitis, 
Acute eosinophilic pneummia,  
Cryptogeric organizing
common & convincing pneumonia ... pneumonitis, Pulmonary ... Acute eosinophilic pneummia ... of idiopathic pulmonary ... Emboli #Pneumonia
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
and cardiogenic pulmonary ... cryptogenic organizing pneumonia ... chronic eosinophilic pneumonia ... Diagnosis #Radiology #Pulmonary ... Central #Peripheral #RadiologyAssistant
The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
consolidation due to a pneumonia ... Sterptococcus pneumoniae ... Radiology #CXR #Pneumonia ... SilhouetteSign #RadiologyAssistant
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
Chronic eosinophilic pneumonia ... with peripheral areas ... presenting as areas ... Chronic eosinophilic pneumonia ... Comparison #Table #RadiologyAssistant
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
tuberculosis, Bacterial pneumonia ... , Cryptococcal pneumonia ... Aspergillus Pneumonia ... - 20% of pneumonias ... Infections #HIV #AIDS #pulmonary
Interstitial pneumonias
An acute reticular pattern is most frequently caused by interstitial edema due to cardiac heart
Interstitial pneumonias ... is interstitial pneumonia ... PCP Mycoplasma pneumonia ... #Interstitial #Pneumonia ... #PJP #RadiologyAssistant
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
Lobar pneumonia ... lobar or segmental pneumonia ... an acute lobar pneumonia ... by Streptcoccus pneumoniae ... #RadiologyAssistant
Pathogens in Pneumonia

Here is a quick review of the pathogens causing pneumonia (useful for enumerating differentials
Pathogens in Pneumonia ... pathogens causing pneumonia ... FACTOR): - S. pneumoniae ... structural lung dsease ... - Chlamydia pneumoniae
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
streptococcus pneumoniae ... are organizing pneumonia ... is organizing pneumonia ... Diagnosis #Radiology #Pulmonary ... Differential #Table #RadiologyAssistant