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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2011-3-22
pubmed:abstractText
To clarify the morphological mechanisms of airway obliteration in bronchiolitis obliterans (BO) associated with various causes, we conducted a retrospective study of 9 patients with a histological diagnosis of BO. The morphological characteristics were analyzed by histopathological bronchial reconstruction. BO was classified into two major morphologic subtypes: constrictive BO (CoB) and cellular/destructive BO (CDB). CoB is characterized by concentric narrowing of the airway lumen due to submucosal fibrosis. In contrast, in CDB the narrowing of the airway lumen is due to intraluminal, mural, and peribronchiolar infiltration of inflammatory cells as well as proliferation of granulation tissue. The histopathological diagnosis was CoB in 6 patients and CDB in 3 patients. Macroscopic bronchial reconstruction in CoB demonstrated that the beginnings of bronchial obliterations were in the 4th to 7th branches, numbering from each segmental bronchus and the lesions were distributed intermittently. Histopathologically, the localization of obliteration was mainly from small bronchi to membranous bronchioli with intermittent airway luminal obliteration in CoB, whereas the primary lesions in CDB revealed more continuous obliteration of the bronchiolar lumen than observed in CoB. In conclusion, this bronchial reconstruction study demonstrated marked morphological differences in the mechanisms of airway obliteration between two major morphologic subtypes of BO.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1440-1827
pubmed:author
pubmed:copyrightInfo
© 2011 The Authors. Pathology International © 2011 Japanese Society of Pathology and Blackwell Publishing Asia Pty Ltd.
pubmed:issnType
Electronic
pubmed:volume
61
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
192-201
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Histopathological bronchial reconstruction of human bronchiolitis obliterans.
pubmed:affiliation
Department of Respiratory Medicine, Toho University Omori Medical Center, Tokyo, Japan. k-sugino@med.tohou.ac.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't