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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 ... result in decreased lung ... - Emphysema - Lung ... Bronchiectasis - Honeycombing ... low attenuation pattern
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
in interstitial lung ... there are four patterns ... is interstitial lung ... histiocytosis or honeycombing ... in many cases UIP
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
pattern of pulmonary ... as a reticular pattern ... with a reticular pattern ... This pattern was ... #Interstitial #Pattern
The CXR demonstrates a reticular interstitial pattern with a preference at the lung bases.
The HRCT demonstrates
reticular interstitial pattern ... preference at the lung ... Radiology #CXR #UIP ... #Interstitial #Pattern ... #Honeycombing #
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
correlation in normal lung ... Notes: (A) Normal lung ... artifact); (G) UIP ... pattern with subpleural ... bronchiectasis, and honeycombing
Whenever you see an area of increased density within the lung, it must be the result
density within the lung ... of these four patterns ... resulting in lobar, diffuse ... the amount of air ... Consolidation #Patterns
Algorithm for Diagnosis of Diffuse Cystic Lung Disease (DCLD)
Round, smooth cysts with normal lung parenchyma in
Algorithm for Diagnosis ... Lung Disease (DCLD ... - LIP/FB, LCDD ... , SS Cyst pattern ... DCLD #pulmonary #Algorithm
Acute interstitial pneumonia (AIP, earlier named Hamman Rich Pneumonitis) is a rare idiopathic lung disease characterized
interstitial pneumonia (AIP ... rare idiopathic lung ... characterized by diffuse ... The histologic pattern ... characteristics are diffuse
On the left a patient who is treated with cytotoxic drugs for a hematologic malignancy.
The radiographic
bronchiectasis and subtle honeycombing ... patients with a UIP ... pattern or NSIP ... pattern seen in ... consider drug-related lung
Imaging Features of Autoimmune Pancreatitis (AIP)
Parenchymal changes suggestive of AIP:
1) Diffuse (AIP I) or (multi-) focal
Pancreatitis (AIP ... suggestive of AIP ... : 1) Diffuse (AIP ... multilobulated pattern ... : 1) Long-segment