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**Preferred term label:**
Broncholith
**Synonyms**
**Definition (free text, please give PubMed ID)**
A broncholith, a calcified peribronchial lymph node that erodes into an adjacent bronchus…
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**Preferred term label:**
Pulmonary parenchymal band
**Synonyms**
**Definition (free text, please give PubMed ID)**
A parenchymal band is a linear opacity, usually 1-3 mm thick and up to 5 c…
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**Preferred term label:**
Pulmonary pseudocavity
**Synonyms**
**Definition (free text, please give PubMed ID)**
A pseudocavity appears as an oval or round area of low attenuation in lung n…
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**Preferred term label:**
Pulmonary blood flow redistribution
**Synonyms**
**Definition (free text, please give PubMed ID)**
Pulmonary blood flow redistribution refers to any departure from …
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**Preferred term label:**
Pulmonary mycetoma
**Synonyms**
Fungus ball
**Definition (free text, please give PubMed ID)**
A mycetoma is a discrete mass of intertwined hyphae, usually of an …
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**Preferred term label:**
**Synonyms**
**Definition (free text, please give PubMed ID)**
Air trapping is retention of air in the lung distal to an obstruction (usually partial). Air trappin…
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**Preferred term label:**
Pulmonary cavity
**Synonyms**
Pulmonary cavern
**Definition (free text, please give PubMed ID)**
A gas-filled space, seen as lucency or low-attenuation area, within …
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**Preferred term label:**
Organizing pneumonia
**Synonyms**
**Definition (free text, please give PubMed ID)**
Organizing pneumonia manifests as a histologic pattern characterized by loose pl…
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**Preferred term label:**
**Synonyms**
**Definition (free text, please give PubMed ID)**
A bronchocele is bronchial dilatation due to retained secretions (mucoid impaction) usually caused b…
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**Preferred term label:**
Silhouette sign
**Synonyms**
**Definition (free text, please give PubMed ID)**
The silhouette sign is the absence of depiction of an anatomic soft-tissue border. …