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Related Experiment Videos

Pulmonary alveolar lithiasis in two siblings.

M Erelel1, E Kiyan, C Cuhadaroglu

  • 1Department of Pulmonology, Faculty of Medicine, University of Istanbul, Turkey. erelelm@yahoo.com

Respiration; International Review of Thoracic Diseases
|June 21, 2001
PubMed
Summary

Pulmonary alveolar microlithiasis (PAM) is a rare lung disease. Researchers identified two siblings with PAM, suggesting early-stage disease may lack specific bone scan uptake.

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Area of Science:

  • Pulmonology
  • Radiology
  • Pathology

Background:

  • Pulmonary alveolar microlithiasis (PAM) is a rare lung disease characterized by calcium phosphate microlith deposition.
  • Its etiology remains largely unknown.

Observation:

  • Two asymptomatic siblings, a 7-year-old girl and a 13-year-old brother, were diagnosed with PAM.
  • The girl showed interstitial changes on imaging but no technetium 99m (99mTc) uptake in the lungs.
  • Microliths in the girl stained with Papanicolaou dye but not von Kossa in bronchoalveolar lavage fluid (BALF).

Findings:

  • The brother exhibited characteristic radiological findings and 99mTc uptake in the lungs.
  • Microliths in the brother stained with both Papanicolaou dye and von Kossa in BALF.
  • The differing findings suggest the girl's case may represent an early phase of PAM.

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Implications:

  • The study highlights potential differences in diagnostic markers between early and later stages of PAM.
  • Lack of 99mTc uptake might indicate early-stage disease, aiding in diagnosis.
  • Further research is needed to understand the progression and diagnostic nuances of PAM.