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Exogenous Lipoid Pneumonia
Article Number: SIS697182AI210525
21st May, 2025
Author(s):
Taichi Kaneko, M.D.; Ryota Otoshi, M.D.
Abstract:
A 38-year-old woman was referred for evaluation of an opacity in the right lower lung lobe. Despite lacking respiratory symptoms, she reported a long history of disordered eating involving the consumption of large amounts of salad oil followed by induced vomiting. High-resolution computed tomography showed ground-glass opacities with fat-tissue density, consistent with exogenous lipoid pneumonia caused by oil aspiration. Bronchoscopy revealed yellow secretions in the bronchial lumen, and cytologic examination confirmed lipid-laden macrophages. Histopathological analysis showed macrophages phagocytosing lipid droplets. The patient underwent cognitive behavioral therapy for her eating disorder, and six months after remission, radiologic findings had resolved.