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Related Concept Videos

Chronic Obstructive Pulmonary Disease II: Emphysema01:23

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Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
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Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
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Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations01:19

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Chronic Obstructive Pulmonary Disease, or COPD, is a long-term condition marked by persistent and only partially reversible airflow limitation. It involves two overlapping conditions—chronic bronchitis and emphysema—which often co-appear but differ in dominant symptoms and underlying mechanisms.Chronic Bronchitis FeaturesChronic bronchitis presents with a persistent productive cough and thick, sometimes purulent mucus due to airway inflammation, enlarged mucus glands, and goblet cell...
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Imaging Studies III: Computed Tomography01:27

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Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function
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Computed tomography-based centrilobular emphysema subtypes relate with pulmonary function.

Mamoru Takahashi1, Gen Yamada, Hiroyuki Koba

  • 1Department of Respiratory Medicine and Allergology, Sapporo Medical University, School of Medicine, South-1 West-16, Chuo-ku, Sapporo 060-8543, Japan ; Department of Respirology, NTT East Corporation Sapporo Hospital, South-1 West-15, Chuo-ku, Sapporo 060-0061, Japan.

The Open Respiratory Medicine Journal
|August 13, 2013
PubMed
Summary
This summary is machine-generated.

Morphological variations in centrilobular emphysema (CLE) low attenuation areas (LAA) correlate with pulmonary function. Specific LAA shapes impact airflow limitation and diffusing capacity, aiding in respiratory function assessment.

Keywords:
CT.Centrilobular emphysemapulmonary function testsubtype

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Area of Science:

  • Pulmonary Medicine
  • Radiology
  • Pathology

Background:

  • Centrilobular emphysema (CLE) is characterized by low attenuation areas (LAA) on CT.
  • Observed LAA morphologies in CLE vary, prompting investigation into their clinical significance.
  • Preliminary CT-pathologic correlations identified three distinct LAA types in CLE.

Purpose of the Study:

  • To investigate the relationship between LAA morphology in CLE and pulmonary function.
  • To determine if distinct LAA subtypes correlate with differences in lung function parameters.

Main Methods:

  • Seventy-three Japanese patients with stable CLE were classified into three subtypes (A, B, C) based on LAA morphology (shape, border definition).
  • Visual CT evaluation was used for classification.
  • CT scores, pulmonary function tests (including FEV1%), and smoking indices were compared across subtypes.

Main Results:

  • Subtype B (irregular, ill-defined borders) and Subtype C (coalesced, irregular, ill-defined borders) showed significantly higher CT scores and smoking indices than Subtype A (round/oval, well-defined borders).
  • Subtype C exhibited significantly lower FEV1% compared to Subtypes A and B.
  • Subtype B demonstrated significantly lower diffusing capacity of the lung for carbon monoxide than Subtype A.

Conclusions:

  • Morphological variations in LAA within CLE are associated with airflow limitation and impaired alveolar diffusing capacity.
  • Assessing LAA morphological features may assist in predicting respiratory function in CLE patients.