14 results
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Hypersensitivity ... Clinical #Radiology #HRCT ... #CTChest #Nodular ... Pattern #Comparison #Table ... #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Diagnosis #Radiology #Pulmonary ... #CTChest #Nodular ... NodularPattern #Differential ... #Comparison #Table ... #RadiologyAssistant
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
the overlap in differential ... Diagnosis #Radiology #Pulmonary ... #HRCT #CTChest ... #Differential # ... RadiologyAssistant
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 ... Radiology #CXR #CTChest ... Chronic #Fibrosis #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
histiocytosis - Hypersensitivity ... - Aspiration - Pulmonary ... #HRCT #ChestCT ... #Differential #Table ... #Upper #Lower #RadiologyAssistant
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular ... Diagnosis #Radiology #Pulmonary ... #HRCT #CTChest ... #Differential # ... Algorithm #RadiologyAssistant
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 ... HypersensitivityPneumonitis #Resolution #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... patterns: reticular, nodular ... low attenuation (table ... Diagnosis #Radiology #Pulmonary ... #RadiologyAssistant
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
The differential ... centrilobular nodules ... are confluent, HRCT ... Clinical #Radiology #CTChest ... HypersenstitivityPneumonitis #RadiologyAssistant
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
resolution of the HRCT ... distribution: Hypersensitivity ... #CTChest #GGO # ... #GroundGlass #Differential ... #RadiologyAssistant