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Chronic bronchitis: a retrospective clinicopathologic study of 25 cases
Andreea Elena Marinaş1, Paulina Ciurea, D Pirici
1Department of Anesthesia and Intensive Care, University of Medicine and Pharmacy of Craiova, Craiova, Romania.
Summary
Chronic bronchitis (CB), a form of Chronic Obstructive Pulmonary Disease (COPD), is linked to specific morphological changes in the bronchial tree. Inflammatory cell density in the bronchial wall correlates with airflow limitation (FEV1%).
Area of Science:
- Pulmonology
- Pathology
- Epidemiology
Background:
- Chronic Obstructive Pulmonary Disease (COPD) is a major global health concern.
- Chronic bronchitis (CB) is a significant clinico-pathological entity within COPD, affecting millions.
- CB involves bronchial inflammation, mucus hypersecretion, and progressive airflow limitation.
Purpose of the Study:
- To identify key morphological features of chronic bronchitis in a patient cohort.
- To correlate these morphological findings with clinical and epidemiological parameters.
- To investigate the relationship between inflammation and airflow limitation in CB.
Main Methods:
- Retrospective clinical and morphological study.
- Inclusion of 17 male smokers with CB, 8 non-smokers with CB, and 5 asymptomatic non-smokers.
- Analysis of bronchial biopsies for histopathological changes and inflammatory cell infiltration.
Main Results:
- CB predominantly affects older male smokers (≥65 years), with a median FEV1% around 71%.
- Histopathology reveals squamous metaplasia, goblet cell hyperplasia, and enlarged bronchial glands due to mononuclear cell inflammation.
- Significant correlation found between inflammatory cell densities (except mast cells) and FEV1% in bronchial epithelium and submucosa.
Conclusions:
- Morphological changes in CB are consistent across smokers and non-smokers.
- Inflammatory cell infiltration in the bronchial wall is a key feature of CB.
- Inflammatory cell density is significantly associated with airflow limitation in chronic bronchitis patients.
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