Lung - nontumor
Other interstitial pneumonitis / fibrosis
Obliterative bronchiolitis



Topic Completed: 1 September 2011

Revised: 30 January 2019, last major update September 2011

Copyright: (c) 2003-2018, PathologyOutlines.com, Inc.

PubMed search: obliterative bronchiolitis [title]


Elliot Weisenberg, M.D.
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Cite this page: Weisenberg E. Obliterative bronchiolitis. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/lungnontumorobliterativebronch.html. Accessed July 18th, 2019.
Definition / general
  • Associated with bone marrow, heart and lung transplants, rheumatoid arthritis, penicillamine or gold therapy and post viral infection, especially adenovirus
  • Associated with chronic rejection in lung transplant patients, an irreversible condition with poor prognosis
Microscopic (histologic) description
  • May be patchy, fibrosis in submucosa of bronchioles leading to partial or complete occlusion of small airways
  • Inflammatory cell infiltrates may or may not be present
  • Organizing pneumonia may be present
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