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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
result in decreased lung ... - Emphysema - Lung ... #Differential #Diagram ... #Comparison #Honeycombing ... Emphysema #SignetRing #RadiologyAssistant
On the left three different patients with lung cysts.
From left to right: Lymphangiomyomatosis, LIP and Langerhans
patients with lung ... CTChest #Cystic #Comparison ... Histiocytosis #RadiologyAssistant
Tree-in-bud
In centrilobular nodules the recognition of 'tree-in-bud' is of value for narrowing the differential diagnosis.
Tree-in-bud describes
identified in the lung ... CTChest #TreeInBud #Diagram ... #RadiologyAssistant
The distribution of nodules shown on HRCT is the most important factor in making an accurate
structures of the lung ... Perilymphatic #Comparison ... #Diagram #RadiologyAssistant
Stage I - Redistribution
In a normal chest film with the patient standing erect, the pulmonary vessels
supplying the upper lung ... supplying the lung ... the apex and the lung ... In these cases comparison ... Redistribution #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the surrounding lung ... Cyst #Emphysema #Comparison ... #RadiologyAssistant
Congestive heart failure (CHF) is the result of insufficient output because of cardiac failure, high resistance
In the lungs LV ... the result of long ... Features #Findings #Diagram ... #RadiologyAssistant
It can be difficult to distinguish these three entities.
There are two diagnostic hints for further differentiation:
-
in the 'black' lung ... to the 'white' lung ... and 'white' lung ... #Attenuation #Comparison ... #RadiologyAssistant
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
throughout the whole lung ... #CTChest #UIP #Comparison ... Fibrosis #Mimic #ILD #RadiologyAssistant