1075 results
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... pneumonitis: ill defined centrilobular ... Hypersensitivity pneumonitis: centrilobular ... Radiology #HRCT #CTChest ... #Nodular #Pattern
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... Centrilobular emphysema ... Notice the centrilobular ... Radiology #HRCT #CTChest ... LowAttenuation #Cystic #Pattern
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... pneumonitis: ill defined centrilobular ... Hypersensitivity pneumonitis: centrilobular ... Radiology #Pulmonary #CTChest ... #Nodular #Pattern
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation pattern ... Centrilobular emphysema ... Radiology #HRCT #CTChest ... LowAttenuation #Cystic #Pattern
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular pattern ... perilymphatic, random and centrilobular ... distribution is likely centrilobular ... are visible, the pattern ... Pulmonary #HRCT #CTChest
Subacute hypersensitivity pneumonitis
The key findings in the subacute hypersensitivity pneumonitis are:
ill-defined centrilobular nodules of ground-glass opacity
are: ill-defined centrilobular ... cases) or mosaic pattern ... are ill-defined centrilobular ... Clinical #Radiology #CTChest ... Nodular #Subacute #Centrilobular
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
in ground glass pattern ... , NSIP, DIP. - Centrilobular ... Radiology #Pulmonary #CTChest
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
with ground glass pattern ... presents with centrilobular ... Clinical #Radiology #CTChest
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
On the left a chest ... is a reticular patern ... recognized that this pattern ... this patient is centrilobular ... Radiology #CXR #CTChest
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
the dominant HR-pattern ... secondary lobule (centrilobular ... Pulmonary #HRCT #CTChest