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Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
pattern The algorithm ... the nodules are diffuse ... Pulmonary #HRCT #CTChest ... #NodularPattern ... #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... Miliary TB: random ... Radiology #Pulmonary #CTChest ... #NodularPattern ... Comparison #Table #RadiologyAssistant
Random distribution of nodules in miliary tuberculosis #Clinical #Radiology #CTChest #Random #MiliaryTB #Miliary #RadiologyAssistant
Random distribution ... of nodules in miliary ... Clinical #Radiology #CTChest ... #Random #MiliaryTB ... #Miliary #RadiologyAssistant
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Miliary TB: random ... perilymphatic distribution ... Radiology #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
The distribution of nodules shown on HRCT is the most important factor in making an accurate
in the nodular pattern ... Random distribution ... Pulmonary #HRCT #NodularPattern ... #Nodular #Pattern ... Comparison #Diagram #RadiologyAssistant
Miliary TB
This represents a hematogenous dissemination of infection and may occur in association with either primary
nodules with a random ... distribution. ... Clinical #Radiology #CTChest ... #Miliary #MiliaryTB ... #Tuberculosis #RadiologyAssistant
Differential diagnosis of TB.
Primary TB: Acute bacterial pneumonia
Secondary TB: Sarcoidosis, Silicosis, Pneumoconiosis
Endobronchial spread of TB: Bronchopneumonia,
In both miliary ... nodules have a random ... distribution. ... Diagnosis #Radiology #CTChest ... Metastases #Mimic #RadiologyAssistant
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
with ground glass pattern ... in a mosaic distribution ... confluent, HRCT shows diffuse ... Clinical #Radiology #CTChest ... HypersenstitivityPneumonitis #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 ... perilymphatic or random ... Pulmonary #HRCT #CTChest ... Interpretation #Algorithm ... #ILD #RadiologyAssistant