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Lung-nontumor

Other interstitial pneumonitis / fibrosis

Lipoid pneumonia

Reviewers: Elliot Weisenberg, M.D. (see Reviewers page)
Revised: 25 September 2011, last major update September 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.

Definition
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● Usually incidental post-mortem finding associated with debilitating disease
● Lipid either exogenous (from nasal sprays or inhalation of other lipid containing substances) or endogenous (bronchial obstruction)

Gross description
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● Well-circumscribed, firm with prominent lymphatics on lung surface in exogenous type

Gross images
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Yellow cut surface

Micro description
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● Lipoid material (or empty spaces), inflammatory cells and young fibroblasts
● Reactive endarteritis, marked alveolar lining cell hyperplasia and lipid-laden foamy macrophages

Micro images
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Aspiration pneumonia


Foamy macrophages in alveolar spaces

End of Lung-nontumor > Other interstitial pneumonitis / fibrosis > Lipoid pneumonia

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