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Prognostic value of clinical, morphologic, and immunohistochemical factors in patients with bronchiolitis obliterans-organizing pneumonia.
MedLine Citation:
PMID:  23114922     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Bronchiolitis obliterans-organizing pneumonia (BOOP) is an inflammatory and fibrosing disease involving the distal bronchioles, bronchiolar ducts, and alveoli. We studied 91 patients with BOOP. Univariate analysis was used to relate age, sex, smoking, morphology, and expression of immunohistochemical markers CD68, D2-40, CD31, CD34, collagen IV, collagen III, platelet-derived growth factor receptor, and vascular endothelial growth factor (VEGF) with the response to corticosteroid therapy. Seventy-two patients had idiopathic BOOP and 19 secondary BOOP. The median age of the patients was 59.54 years. Most patients were current or former smokers. All cases had a patchy lesion consisting of small buds of fibromyxoid tissue in small bronchioles, bronchiolar ducts, and alveoli. The buds contained collagen and reticulin fibers, fibroblasts, macrophages, mononuclear inflammatory cells, and vessels in different proportions. We found no morphologic differences between primary and secondary BOOP. Patients younger than 38 years and nonsmokers had a significant good response to corticosteroid therapy. Favorable morphologic predictors were the presence of large bronchial plugs and mild inflammatory reaction (P = .093). By immunohistochemistry, the presence of collagen IV with the absence of collagen III, CD68-positive cells and positive VEGF were associated with a good response to corticosteroid therapy. We conclude that age, smoking, localization, and extension of proliferative intrabronchiolar plugs and positive immunostains for CD68, VEGF, and collagen IV with negative collagen III were useful to predict response to corticosteroid therapy and relapse.
Authors:
Javier Pardo; Angel Panizo; Iosu Sola; Francisco Queipo; Ana Martinez-Peñuela; Rafael Carias
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-29
Journal Detail:
Title:  Human pathology     Volume:  -     ISSN:  1532-8392     ISO Abbreviation:  Hum. Pathol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-11-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9421547     Medline TA:  Hum Pathol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Crown Copyright © 2012. Published by Elsevier Inc. All rights reserved.
Affiliation:
Department of Pathology, Clínica Universitaria, University of Navarra, 31008 Pamplona, Spain. Electronic address: jpardo@unav.es.
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