Difference between revisions of "Approach to High Resolution CT"
From Radipedia
(→Lung Nodules) |
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'''Centrilobular Nodules''' | '''Centrilobular Nodules''' | ||
*Most peripheral nodule is 5-10 mm from pleura and fissure | *Most peripheral nodule is 5-10 mm from pleura and fissure | ||
| − | *May mimic random pattern | + | *May mimic random pattern, but '''no pleural nodules''' |
*Disease of small vessels or small airways | *Disease of small vessels or small airways | ||
*'''[[Hypersensitivity pneumonitis]]''' | *'''[[Hypersensitivity pneumonitis]]''' | ||
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*[[ABPA]] | *[[ABPA]] | ||
*[[BAC]] | *[[BAC]] | ||
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== Interstitial Opacity == | == Interstitial Opacity == | ||
Latest revision as of 15:28, 3 June 2012
Lung Nodules
Perilymphatic Nodules
- Distribution along pleura and interlobular septa
- Sarcoidosis
- Lymphangitic carcinomatosis
- Silicosis
- Amyloidosis
- LIP
Random Nodules
- May have pleural nodules
- Miliary TB
- Miliary fungal disease
- Hematogenous metastasis
Centrilobular Nodules
- Most peripheral nodule is 5-10 mm from pleura and fissure
- May mimic random pattern, but no pleural nodules
- Disease of small vessels or small airways
- Hypersensitivity pneumonitis
- Endobronchial spread of MAC or TB
- Bronchiolitis either infectious or inflammatory
- Endobronchial spread of BAC
- Pneumoconiosis
- COP
- LCH
- Pulmonary edema or vasculitis
- Bronchopneumonia
Tree in Bud
- Dilitation and impaction of centrilobular airways
- Centered 5-10 mm from pleural surface
- Most consistent with infection (viral, MAC, TB, etc)
- Bronchiectasis or bronchitis
- Cystic fibrosis with superimposed infection
- Aspiration
- ABPA
- BAC
