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Related Experiment Videos

Pulmonary involvement in progressive systemic sclerosis: a multidisciplinary approach.

R Pistelli1, C L Maini, L Fuso

  • 1Istituto di Clinica Medica, Università Cattolica S. Cuore, Roma, Italy.

Respiration; International Review of Thoracic Diseases
|January 1, 1987
PubMed
Summary
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Early lung involvement in progressive systemic sclerosis (PSS) may show increased alveolar-capillary permeability before functional decline. This suggests inflammation, not vasculitis, is the primary driver in PSS lung disease.

Area of Science:

  • Rheumatology
  • Pulmonology
  • Medical Imaging

Background:

  • Progressive systemic sclerosis (PSS) is an autoimmune disease that can affect multiple organs, including the lungs.
  • The early detection and natural evolution of lung involvement in PSS are not well understood.
  • Multidisciplinary approaches are crucial for comprehensive patient assessment.

Purpose of the Study:

  • To define the early features of lung involvement in PSS.
  • To understand the natural evolution of pulmonary complications in PSS patients.
  • To investigate the relationship between radiological, scintigraphic, and functional lung assessments.

Main Methods:

  • Studied 21 patients diagnosed with PSS using American Rheumatism Association criteria.
  • Employed a multidisciplinary approach including radiological, scintigraphic (99mTc-DTPA clearance), and pulmonary function tests.

Related Experiment Videos

  • Assessed restrictive functional patterns, elastic recoil, carbon monoxide transfer, and alveolar-capillary permeability.

    • Main Results:

    • A restrictive functional pattern was observed in 10 out of 21 patients.
    • Increased alveolar-capillary permeability (13/14 patients) was detected via 99mTc-DTPA clearance, often preceding significant changes in carbon monoxide transfer.
    • No significant correlation was found between radiological lung findings and 99mTc-DTPA clearance rates.

    Conclusions:

    • Preliminary findings suggest early lung involvement in PSS is characterized by alveolar and interstitial inflammation.
    • Increased alveolar-capillary permeability appears to be an early indicator of PSS-related lung disease.
    • Results support an inflammatory process over a vasculitic mechanism in the early stages of PSS lung disease.