10 results
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
pattern The algorithm ... perilymphatic, random and centrilobular ... are visible, the pattern ... NodularPattern #Nodular #Pattern ... #RadiologyAssistant
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
Ground-glass opacity (GGO ... in ground glass pattern ... , NSIP, DIP. - Centrilobular ... Pulmonary #CTChest #GGO ... #Differential #RadiologyAssistant
The distribution of nodules shown on HRCT is the most important factor in making an accurate
in the nodular pattern ... In most cases small ... perilymphatic, centrilobular ... NodularPattern #Nodular #Pattern ... Comparison #Diagram #RadiologyAssistant
On the left a patient with GGO as dominant pattern.
In addition there is traction bronchiectasis indicating
as dominant pattern ... This case is one ... of the possible patterns ... relatively uniform pattern ... #RadiologyAssistant
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
with ground glass pattern ... presents with centrilobular ... Radiology #CTChest #GGO ... HypersenstitivityPneumonitis #RadiologyAssistant
Subacute hypersensitivity pneumonitis
The key findings in the subacute hypersensitivity pneumonitis are:
ill-defined centrilobular nodules of ground-glass opacity
are: ill-defined centrilobular ... opacity (80% of cases ... ) or mosaic pattern ... are ill-defined centrilobular ... #RadiologyAssistant
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
is a reticular patern ... recognized that this pattern ... was caused by multiple ... this patient is centrilobular ... Histiocytosis #Cystic #RadiologyAssistant
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 ... Interpretation #Algorithm ... #ILD #RadiologyAssistant
Ground-glass opacity is nonspecific, but highly significant finding since 60-80% of patients with ground-glass opacity on
20-40% of the cases ... the ground-glass pattern ... with GGO, one without ... #GroundGlass #GGO ... #RadiologyAssistant
In the images on your left you can appreciate again the spectrum of findings seen in
a very subtle GGO ... obvious example of GGO ... image also shows GGO ... fine reticular pattern ... NonspecificInterstitialPneumonia #ILD #RadiologyAssistant