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===Lung histology=== | ===Lung histology=== | ||
==== | ====Bronchial mucosa==== | ||
*Ciliated pseudostratified epithelium. | |||
*Minimal/mild inflammation. | |||
*Small amount of smooth muscle. | |||
Metaplastic changes: | |||
*Goblet cells - described in association [[asthma]] and [[COPD]].<ref>{{cite journal |authors=Rogers DF |title=The airway goblet cell |journal=Int J Biochem Cell Biol |volume=35 |issue=1 |pages=1–6 |date=January 2003 |pmid=12467641 |doi=10.1016/s1357-2725(02)00083-3 |url=}}</ref> | |||
*Squamous - may precede dysplasia and malignancy. | |||
====Lung parenchyma==== | |||
Common: | Common: | ||
*Type I pneumocyte - cover most of the alveolar surface. | *Type I pneumocyte - cover most of the alveolar surface. |
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