23 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
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- Lung cysts (LAM ... on the basis of HRCT ... findings. ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... on HRCT Most of ... disease comes from HRCT ... On HRCT there are ... #Pulmonary #CXR
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
responses of the lung ... indicates unknown cause ... on HRCT and histology ... #Diagnosis #Radiology ... #Pulmonary #CTChest
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
histologic pattern of pulmonary ... On a chest X-ray ... A HRCT is needed ... to confirm the diagnosis ... HRCT demonstrated
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
interpretation of HRCT ... low attenuation (emphysema ... there additional findings ... #Radiology #Pulmonary ... #HRCT #CTChest
On the left a typical case of panlobular emphysema.
There is uniform destruction of the underlying architecture
left a typical case ... the secondary pulmonary ... Pulmonary vessels ... difficult to detect on HRCT ... Clinical #Radiology #CTChest
Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
pneumatocele, emphysema ... since in many cases ... we describe a chest ... visible wall #CXR ... #Pulmonary #Diagnosis
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Unknown • 6-7 cases ... - Imaging: • CXR ... , cavities • HRCT ... other processes Workup ... #ILD #diagnosis
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
centrilobular emphysema ... show very similar HRCT ... findings ... throughout the whole lung ... #Radiology #CTChest
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
in the adjacent lung ... of the affected lung ... parenchyma Diagnosis ... : • HRCT (high-resolution ... #differential #diagnosis