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The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... of morphologic findings ... these patterns are ... also common findings ... #RadiologyAssistant
PEMSource: Algorithm for fever WITHOUT source by Age
#Diagnosis #Management #Peds #Fever #Without #Source #Table #Algorithm #PEMSource
PEMSource: Algorithm ... WITHOUT source by Age ... Without #Source #Table ... #Algorithm #PEMSource
Mediastinal masses are discussed in more detail in Mediastinal masses.
Here is just a brief overview. #Diagnosis
Mediastinal masses are ... #Differential #Table ... Middle #Posterior #RadiologyAssistant
Multiple masses
The differential diagnostic list of multiple masses is very long.
The most important diagnoses are listed
important diagnoses are ... listed in the table ... #Differential #RadiologyAssistant
Since these risk factors are numerous and have different effects on the malignancy risk, it is
these risk factors are ... malignancy [8](Table ... PulmonaryNodule #RadiologyAssistant
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
child-bearing age ... Pattern #Comparison #Table ... #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
about imaging findings ... On HRCT there are ... low attenuation (table ... based on the x-ray findings ... #Differential #RadiologyAssistant
Hilar enlargement
The table summarizes the causes of hilar enlargement.
Normal hili are:
- Normal in position - left
enlargement The table ... Normal hili are: ... Unilateral #Bilateral #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
child-bearing age ... Differential #Comparison #Table ... #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
child-bearing age ... Pattern #Comparison #Table ... #RadiologyAssistant