11 results
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Centrilobular emphysema ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison ... #Table #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Centrilobular emphysema ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison ... #Table #RadiologyAssistant
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
These include: - Emphysema ... - Lung cysts (LAM ... on the basis of HRCT ... #Diagnosis #Radiology ... Differential #Diagram #Comparison
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
on HRCT Most of ... disease comes from HRCT ... On HRCT there are ... low attenuation (table ... #Diagnosis #Radiology
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
(centrilobular emphysema ... Pulmonary edema #Diagnosis ... #Radiology #Pulmonary ... #HRCT #ChestCT ... #Differential #Table
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the differential diagnosis ... emphysematous bullae ... with end-stage fibrosis ... #Radiology #CTChest ... Emphysema #Comparison
Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
, bulla, honeycombing ... we describe a chest ... visible wall #CXR ... #Differential #Table ... #Radiology
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
) Differential diagnosis ... centrilobular emphysema ... show very similar HRCT ... #Radiology #CTChest ... #UIP #Comparison
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
pattern of pulmonary fibrosis ... On a chest X-ray ... A HRCT is needed ... HRCT demonstrated ... #Clinical #Radiology
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Loss of weight • Chest ... fibrosis • Aspiration ... no evidence of cystic ... fibrosis) Physical ... : • HRCT (high-resolution