We report thin-section CT findings of pulmonary fat embolism which was confirmed by clinical features and microscopic examination of cells obtained by bronchoalveolar lavage. Initial thin-section CT showed extensive air space consolidation and multiple ill-defined nodular densities in both lungs. Follow-up CT revealed ground-glass appearance and faint nodules in both lungs. Perfusion scan showed multiple small perfusion defects in the peripheral portion of both lungs.