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Related Experiment Videos

Idiopathic interstitial pneumonias: CT features.

David A Lynch1, William D Travis, Nestor L Müller

  • 1Department of Radiology, University of Colorado Health Sciences Center, CB A-030, 4200 E Ninth Ave, Denver, CO 80262, USA. david.lynch@uchsc.edu

Radiology
|July 1, 2005
PubMed
Summary

Idiopathic interstitial pneumonias (IIPs) are a group of lung diseases with distinct imaging and histologic patterns. Diagnosis requires correlating clinical, imaging, and pathologic findings for accurate classification.

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Area of Science:

  • Pulmonary Medicine
  • Radiology
  • Pathology

Background:

  • Idiopathic interstitial pneumonias (IIPs) encompass a spectrum of chronic lung diseases.
  • Accurate diagnosis is crucial for appropriate management and prognosis.
  • IIPs can be idiopathic or secondary to conditions like connective tissue disease.

Purpose of the Study:

  • To delineate the characteristic imaging and histologic features of various IIP subtypes.
  • To emphasize the importance of integrating clinical, imaging, and pathological data for diagnosis.
  • To provide a concise overview of the diagnostic criteria for each IIP entity.

Main Methods:

  • Review of characteristic computed tomographic (CT) and histological patterns for each IIP.
  • Correlation of clinical presentation with imaging and pathological findings.

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  • Classification based on established diagnostic criteria for usual interstitial pneumonia (UIP), nonspecific interstitial pneumonia (NSIP), and others.

    • Main Results:

    • UIP: Basal, peripheral reticular pattern with honeycombing and traction bronchiectasis on CT.
    • NSIP: Predominantly basal ground-glass opacity and reticular pattern.
    • DIP/RB-ILD: Smoking-related, with ground-glass opacity and centrilobular nodules.
    • COP: Patchy consolidation (peripheral or peribronchovascular).
    • AIP: Diffuse consolidation and ground-glass opacity.
    • LIP: Ground-glass opacity, sometimes with perivascular cysts.

    Conclusions:

    • Each IIP subtype exhibits distinct, though sometimes variable, imaging and histologic features.
    • Diagnosis relies on a multidisciplinary approach combining clinical, radiological, and pathological assessments.
    • Understanding these patterns is key to differentiating IIP entities and guiding patient care.