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Here are the most common examples of these four patterns on a chest x-ray (click image
patterns on a chest ... Lobar consolidation ... Atelectasis #Diagnosis ... #Clinical #Radiology ... #CXR #Consolidation
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
On the chest x-ray ... weight loss or long ... of chronic consolidation ... #CXR #AirBronchogram ... #RUL #Lobar #Pneumonia
Based on the images alone, it is usually not possible to determine the cause of the
between these chest ... with low oxygen level ... #Clinical #Diagnosis ... #Radiology #CXR ... #Lobar #Consolidation
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
Differential diagnosis ... usually multiple ill-defined ... pneumonia caused ... #Diagnosis #Radiology ... #Pulmonary #CXR
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
the air-fluid level ... attached to the chest ... is a possible diagnosis ... LAM is a rare lung ... #CXR #Pneumothorax
Whenever you see an area of increased density within the lung, it must be the result
four patterns. 1- Consolidation ... substances resulting in lobar ... or multifocal ill-defined ... #Diagnosis #Radiology ... #CXR #Consolidation
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
densities in both lungs ... masses. ... The lab-findings ... #Clinical #Radiology ... #CXR #Peripheral
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... Blood cultures • CXR ... early disease) • CXR ... upright or lat ... #differential #causes
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
lesions than the chest ... can suggest the diagnosis ... which are probably consolidations ... #Clinical #Radiology ... #CXR #CTChest #
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
- Differential Diagnosis ... and dyspnea • Lobar ... consolidation or ... infiltrates or lobar ... #differential #diagnosis