Objective: The purpose of our study was to show a distinctive appearance of exogenous lipoid pneumonia on thin-section CT that has not, to our knowledge, been previously documented.
Conclusion: On thin-section CT, exogenous lipoid pneumonia is revealed as patchy well-defined areas of ground-glass attenuation with superimposed septal thickening (crazy-paving pattern). Exogenous lipoid pneumonia should be included in the differential diagnosis when thin-section CT reveals a crazy-paving pattern.