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On the left three different patients with lung cysts.
From left to right: Lymphangiomyomatosis, LIP and Langerhans
patients with lung ... cysts. ... #Clinical #Diagnosis ... #Radiology #CTChest ... #Cystic #Comparison
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... central dot. - LIP ... #Clinical #Diagnosis ... #Radiology #CTChest ... #Differential #Comparison
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
- Emphysema - Lung ... cysts (LAM, LIP ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... LowAttenuation #Differential
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... is interstitial lung ... in many cases UIP ... #Diagnosis #Radiology
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
attached to the chest ... cyst in the upper ... something to do with a cystic ... leading to pulmonary cyst ... #Clinical #Radiology
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
In the differential ... can heal and end up ... the surrounding lung ... #Clinical #Diagnosis ... #Radiology #CTChest
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
responses of the lung ... to injury and do ... findings of NSIP, UIP ... #Diagnosis #Radiology ... #Pulmonary #CTChest
On the left a chest film of a patient with UIP due to IPF.
The findings on
a patient with UIP ... changes in the basal lung ... thick walls of the cysts ... film with long ... #Clinical #Radiology
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
fibrosis as in UIP ... , NSIP and long ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... Consolidation #Differential
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
or interstitial lung ... predominance: UIP ... bronchiolitis #Diagnosis #Radiology ... #Pulmonary #CTChest ... #GroundGlass #Differential