Pulmonary pathology in Gaucher's disease

Area of Science:

• Pulmonology
• Genetics
• Pathology

Background:

• Gaucher's disease is a rare genetic disorder.
• Pulmonary involvement is typically considered uncommon in Gaucher's disease, particularly type I.
• The full spectrum of lung pathology in Gaucher's disease remains undescribed.

Purpose of the Study:

• To investigate the prevalence and patterns of pulmonary involvement in Gaucher's disease.
• To describe the pathological findings of Gaucher cells in lung tissue.
• To determine if pulmonary involvement is more common than previously recognized.

Main Methods:

• Retrospective analysis of nine autopsy cases of Gaucher's disease (six type I, three type II).
• Histopathological evaluation of lung sections.
• Application of special stains, including immunohistochemical stains (CD68, cytokeratin, CD34).

Main Results:

• Gaucher cells were identified in the lungs of all nine patients.
• Pulmonary involvement was pathologically significant in five cases and clinically significant in three.
• Four distinct patterns of lung involvement were observed: intracapillary, interstitial, septal thickening, and intra-alveolar infiltrates.
• Universal involvement of pulmonary capillaries suggests a systemic process.

Conclusions:

• Pulmonary involvement in Gaucher's disease is more frequent than previously assumed.
• Gaucher cells in the lungs are a common finding, often systemic rather than intrinsic lung disease.
• Immunocytochemical staining aids in identifying Gaucher cells and differentiating them from alveolar macrophages.