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| *Abbreviated ''RB-ILD'' or ''RBILD''. | | *Abbreviated ''RB-ILD'' or ''RBILD''. |
| *[[AKA]] ''respiratory bronchiolitis-associated interstitial lung disease''. | | *[[AKA]] ''respiratory bronchiolitis-associated interstitial lung disease''. |
| | | {{Main|Respiratory bronchiolitis-interstitial lung disease}} |
| ===General===
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| *May be an early version of ''[[DIP]]''.
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| *Associated with smoking.
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| ===Microscopic===
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| Features:<ref name=Ref_PPP197-8>{{Ref PPP|197-8}}</ref>
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| *Brown pigmented airspace macrophages - ''smoker's macrophages'' - '''key feature'''.
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| **Cannot count (distinct) granules.
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| *Inflammation of the terminal bronchioles.
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| Note:
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| *The histologic features of RBILD may be present peri-tumoural.
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| *Hemosiderin-laden macrophages have coarse granules - that one can count.
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| DDx:
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| *[[Desquamative interstitial pneumonia]].
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| ====Image====
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| *[http://www.nature.com/modpathol/journal/v19/n11/fig_tab/3800671f2.html RB-ILD (nature.com)].
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| ==Desquamative interstitial pneumonia== | | ==Desquamative interstitial pneumonia== |