Diffuse aspiration bronchiolitis: Recurrent aspiration; typically elderly patients with neurologic disorders, dementia, or oropharyngeal dysphagia
Disseminated tree-in-bud opacities with patchy lobular consolidations
Lentil pneumonia: Subset of diffuse aspiration bronchiolitis; granulomatous pneumonitis caused by aspiration of leguminous material (e.g., lentils, beans, peas)
IMAGING
General Features
Radiographic Findings
CT Findings
Imaging Recommendations
MR Findings
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Microscopic Features
CLINICAL ISSUES
Presentation
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Image Interpretation Pearls
Selected References
DiBardino DM et al: Aspiration pneumonia: a review of modern trends. J Crit Care. 30(1):40-8, 2015
Marchiori E et al: Lipoid pneumonia in 53 patients after aspiration of mineral oil: comparison of high-resolution computed tomography findings in adults and children. J Comput Assist Tomogr. 34(1):9-12, 2010
Rossi SE et al: "Crazy-paving" pattern at thin-section CT of the lungs: radiologic-pathologic overview. Radiographics 23: 1509-19, 2003
Franquet T et al: Aspiration diseases: Findings, pitfalls, and differential diagnosis. Radiographics 20:673-85, 2000
Kim KI et al: Near drowning: thin-section CT findings in six patients. J Comput Assist Tomogr. 24(4):562-6, 2000
Related Anatomy
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Related Differential Diagnoses
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Definitions
Aspiration-related disorders: Pulmonary diseases resulting from aspiration of solid &/or liquid materials into airways and lungs
Aspiration pneumonia
Pulmonary infection caused by aspiration of oropharyngeal secretions colonized by pathogenic bacteria
Usually manifests as community-acquired pneumonia (CAP)
Aspiration pneumonitis (Mendelson syndrome)
Acute lung injury caused by aspiration of sterile gastric contents
Specific aspiration syndromes
Foreign bodies: Most common endobronchial lesion in children; food particles (vegetables) and tooth fragments (elderly)
Most commonly lodge in mainstem and lobar bronchi
Aspiration of barium sulfate: Mild reaction in early phase due to inert character of barium
Radiopaque material within airways ("tree-in-bud")
Exogenous lipoid pneumonia: Repeated aspiration or inhalation of mineral oil or oily nose drops in adults and cod liver oil and milk in children
Near drowning: Pulmonary edema after acute aspiration of massive amounts of fresh or salt water
Combination of aspiration and noncardiogenic edema
Secondary pneumonia may occur depending on composition of aspirate
Hydrocarbon pneumonia: Accidental, intentional, or occupational aspiration of various toxic substances
Diffuse aspiration bronchiolitis: Recurrent aspiration; typically elderly patients with neurologic disorders, dementia, or oropharyngeal dysphagia
Disseminated tree-in-bud opacities with patchy lobular consolidations
Lentil pneumonia: Subset of diffuse aspiration bronchiolitis; granulomatous pneumonitis caused by aspiration of leguminous material (e.g., lentils, beans, peas)
IMAGING
General Features
Radiographic Findings
CT Findings
Imaging Recommendations
MR Findings
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Microscopic Features
CLINICAL ISSUES
Presentation
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Image Interpretation Pearls
Selected References
DiBardino DM et al: Aspiration pneumonia: a review of modern trends. J Crit Care. 30(1):40-8, 2015
Marchiori E et al: Lipoid pneumonia in 53 patients after aspiration of mineral oil: comparison of high-resolution computed tomography findings in adults and children. J Comput Assist Tomogr. 34(1):9-12, 2010
Rossi SE et al: "Crazy-paving" pattern at thin-section CT of the lungs: radiologic-pathologic overview. Radiographics 23: 1509-19, 2003
Franquet T et al: Aspiration diseases: Findings, pitfalls, and differential diagnosis. Radiographics 20:673-85, 2000
Kim KI et al: Near drowning: thin-section CT findings in six patients. J Comput Assist Tomogr. 24(4):562-6, 2000
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