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Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
Central distribution ... #Diagnosis #Radiology ... #Differential #Table ... #Distribution #Central ... #Peripheral #RadiologyAssistant
Mediastinal masses are discussed in more detail in Mediastinal masses.
Here is just a brief overview. #Diagnosis
discussed in more detail ... #Diagnosis #Radiology ... #Differential #Table ... Middle #Posterior #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
emphysema: no walls, central ... Clinical #Diagnosis #Radiology ... Differential #Comparison #Table ... #RadiologyAssistant
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular ... pattern The algorithm ... nodules along the central ... #Diagnosis #Radiology ... #RadiologyAssistant
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
diseases showing septal ... and intralobular septal ... #Clinical #Radiology ... Differential #Comparison #Table ... #RadiologyAssistant
It is important to recognize Acute Decompensated Heart Failure (ADHF) as more than just simply a
fatigue, altered mental ... #differential #algorithm ... #management #cardiology ... #treatment #table
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
in HRCT, smooth septal ... attenuation with septal ... #Clinical #Radiology ... Pattern #Comparison #Table ... #RadiologyAssistant
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
Septal thickening ... differential diagnosis (Table ... Smooth septal thickening ... #Diagnosis #Radiology ... #Differential #RadiologyAssistant
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
lower zone or a central ... bronchiectasis) #Diagnosis #Radiology ... Interpretation #Algorithm ... #ILD #RadiologyAssistant