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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... basis of HRCT findings ... Diagnosis #Radiology #Pulmonary ... #CTChest #LowAttenuation ... Emphysema #SignetRing #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
about imaging findings ... in interstitial lung ... histiocytosis or honeycombing ... Diagnosis #Radiology #Pulmonary ... #RadiologyAssistant
The CXR demonstrates a reticular interstitial pattern with a preference at the lung bases.
The HRCT demonstrates
The CXR demonstrates ... preference at the lung ... bases. ... #UIP #CTChest # ... TractionBronchiectasis #RadiologyAssistant
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
of pulmonary fibrosis ... On a chest X-ray ... particularly at the lung ... at the lung bases ... RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
indicates unknown cause ... have specific patterns ... Diagnosis #Radiology #Pulmonary ... #CTChest #Idiopathic ... #RadiologyAssistant
Here are the most common examples of these four patterns on a chest x-ray (click image
on a chest x-ray ... mass - Solitary Pulmonary ... Nodule - Multiple Masses ... Clinical #Radiology #CXR ... #RadiologyAssistant
Sarcoidosis
In this case the chest x-ray shows subtle findings that could be described as fine reticulation.
In
the chest x-ray ... shows subtle findings ... Clinical #Radiology #CXR ... #Interstitial #Pattern ... #RadiologyAssistant
On the left a chest film of a patient with UIP due to IPF.
The findings on
The findings on ... appearance of honeycombing ... reticular densities caused ... Clinical #Radiology #CXR ... #CTChest #UIP #
Cardiac incisura
Click image to enlarge.
On the right side of the chest the lung will lie against
the lung will lie ... This causes a density ... It is a normal finding ... Clinical #Radiology #CXR ... Cardiac #Incisura #RadiologyAssistant
Ground-glass opacity is nonspecific, but highly significant finding since 60-80% of patients with ground-glass opacity on
the lung disease ... the ground-glass pattern ... bronchiectasis and honeycombing ... Clinical #Radiology #CTChest ... GroundGlass #GGO #RadiologyAssistant