Related Experiment Video
Updated: Jun 25, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
[A case of pulmonary alveolar proteinosis presenting with peripheral ground-glass opacitiy]
Takahiro Haga1, Norio Kasamatsu, Takeshi Kobayashi
1Department of Respiratory Medicine, Hamamatsu Medical Center.
Abstract:
A 65-year-old asymptomatic nonsmoker woman was found to have bilateral ground glass opacities in subpleural areas. The bronchoalveolar lavage fluid had a light-milky appearance and transbronchial lung biopsy revealed alveolar filling with PAS-positive acellular material. The patient was given a diagnosis of pulmonary alveolar proteinosis (PAP). Chest CT 18 months later showed no changes in the shadows. It may be possible to follow asymptomatic PAP with patchy peripheral air-space disease without treatment.
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