10 results
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Hypersensitivity ... pneumonitis: ill ... Hypersensitivity ... #Clinical #Radiology ... #HRCT #CTChest
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Hypersensitivity ... pneumonitis: ill ... Hypersensitivity ... Clinical #Diagnosis #Radiology ... #Pulmonary #CTChest
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular ... pattern The algorithm ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #CTChest #NodularPattern
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
The HRCT shows a ... hyperaerated secondary nodules ... and secondry nodules ... #Clinical #Radiology ... #CXR #CTChest #
This patient presented with acute dyspnoe and a normal chest film (not shown).
The HRCT at presentation
(left) shows lobular ... areas of ground ... A control HRCT ten ... #Clinical #Radiology ... #CTChest #Hypersensitivity
On the left two different patients with similarl HRCT findings.
The left one is a smoker with
with similarl HRCT ... the right has hypersensitivity ... the well defined areas ... #Clinical #Radiology ... #CTChest #RBILD
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
HR-pattern: reticular nodular ... bronchiectasis) #Diagnosis #Radiology ... #Pulmonary #HRCT ... #CTChest #Interpretation ... #Algorithm #ILD
On the left a smoker with RB-ILD with subtle HRCT-findings.
The dominant pattern is ground glass opacification.
Additional
with subtle HRCT-findings ... interpretion of the HRCT ... would first think hypersensitivity ... #Clinical #Radiology ... #CTChest #RBILD
Amiodarone Induced Lung Toxicity Summary

Who?
• 5% of patients
• Dose ≥ 400 mg per day

How?  Possible
injury • Indirect hypersensitivity ... nodules and masses ... • Reticular + Nodular ... Exclusion of other ILDs ... confirmatory findings on HRCT
On the left a typical case of panlobular emphysema.
There is uniform destruction of the underlying architecture
to widespread areas ... the other hand, mild ... difficult to detect on HRCT ... #Clinical #Radiology ... #CTChest #Panlobular