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Related Experiment Videos

Pulmonary alveolar microlithiasis: CT findings.

P Cluzel1, P Grenier, P Bernadac

  • 1Department of Radiology, Hôpital de la Salpétrière, Paris, France.

Journal of Computer Assisted Tomography
|November 1, 1991
PubMed
Summary

Pulmonary alveolar microlithiasis, a rare lung disease, shows specific patterns on CT scans. High-resolution CT reveals perilobular and bronchovascular distribution, correlating with pathology.

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Area of Science:

  • Radiology
  • Pulmonology
  • Pathology

Background:

  • Pulmonary alveolar microlithiasis (PAM) is a rare chronic lung disease.
  • It is characterized by widespread intraalveolar calcification in both lungs.

Purpose of the Study:

  • To illustrate the characteristic appearance of pulmonary alveolar microlithiasis on conventional and high-resolution computed tomography (CT).

Main Methods:

  • Retrospective analysis of five confirmed cases of pulmonary alveolar microlithiasis.
  • Review of conventional CT and high-resolution CT imaging findings.
  • Correlation of imaging findings with pathologic data.

Main Results:

  • Conventional CT demonstrated inferior and posterior predominance of lesions in four cases.

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  • High concentrations of microliths were observed in the subpleural parenchyma and along bronchovascular bundles on conventional CT.
  • High-resolution CT revealed a perilobular and bronchovascular distribution at the secondary pulmonary lobule level.

    • Conclusions:

    • CT imaging, particularly high-resolution CT, is crucial for diagnosing pulmonary alveolar microlithiasis.
    • The observed CT patterns correlate well with the known pathologic features of the disease.