CTICasesExogenous Lipoid Pneumonia
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Imaging findings
Initial CT images showed a very prominent crazy-paving pattern, characterized by areas of ground-glass opacity with interlobular septal thickening. Cytology from bronchoalveolar lavage (BAL) samples was noted to contain a significant amount of fat content.
Key takeaways
This case demonstrates that imaging findings, such as the crazy-paving pattern, can be highly suggestive of certain diagnoses like alveolar proteinosis, but a detailed clinical history is crucial. This patient's extensive use of Vaseline and other paraffin-containing lip balms for acne-related skin issues led to chronic aspiration of lipid, resulting in exogenous lipoid pneumonia. It has been reported that exogenous lipoid pneumonia can present with a crazy-paving pattern, and the lipid can be inhaled as airborne particles, particularly during sleep.
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