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Related Experiment Videos

[A radiographic classification for sarcoidosis based on the ILP/UC classification bacillus]

H Wang1, Q Li, Y Zhu

  • 1PLA General Navy Hospital, Beijing.

Zhonghua Jie He He Hu Xi Za Zhi = Zhonghua Jiehe He Huxi Zazhi = Chinese Journal of Tuberculosis and Respiratory Diseases
|December 1, 1995
PubMed
Summary

The International Labour Office (ILO) classification system offers a standardized method for describing lung opacities in sarcoidosis. Combining ILO/UC grading with traditional methods improves the assessment of pulmonary involvement severity and type.

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Area of Science:

  • Pulmonology
  • Radiology
  • Medical Imaging

Background:

  • Traditional sarcoidosis classification provides qualitative diagnosis but lacks objective description of pulmonary involvement.
  • Standardized graphic terminology for pneumoconioses, like the International Labour Office (ILO) and Union International Contre Le Cancer (UIC) system, offers a semiquantitative approach.

Purpose of the Study:

  • To devise and evaluate a semiquantitative scheme for describing pulmonary involvement in sarcoidosis using ILO/UIC graphic terminology.
  • To assess the utility of the ILO/UIC classification as a supplement to traditional sarcoidosis diagnostic methods.

Main Methods:

  • A semiquantitative descriptive scheme was applied to 79 sarcoidosis cases.
  • The International Labour Office (ILO) and Union International Contre Le Cancer (UIC) graphic terminology for pneumoconioses was utilized.

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  • Pulmonary opacities were categorized by type (linear-irregular, reticulonodular, rounded), severity, and location.

    • Main Results:

    • In stage II sarcoidosis (56 patients), linear-irregular (s, t, u) and reticulonodular (x, y, z) opacities predominated (50% and 28%, respectively).
    • In stage III sarcoidosis (13 patients), linear-irregular and reticulonodular opacities were also common (38%), with rounded opacities (p, q, r) being less frequent (23%).
    • Opacities were most severe in the bilateral lower lobes for both stages.

    Conclusions:

    • The traditional method for sarcoidosis classification is helpful for qualitative diagnosis but insufficient for objective description of pulmonary involvement.
    • The ILO/UIC classification system is a valuable supplement, enabling grading of opacity type, severity, and location.
    • A combined approach using both traditional and ILO/UIC classification methods is recommended for comprehensive assessment of intrathoracic sarcoidosis.