Axial and coronal reformat (lung window) shows patchy ground-glass opacities with sharp margination between regions of involved and noninvolved lung resulting in a geographic appearance. No obvious apical-basal gradient, however, the right middle lobe and the lingula segments of the left upper lobe are relatively spared. No interlobular septal thickening. No pulmonary embolism detected (not shown).
Fat embolism remains a clinical diagnosis. Case study by Malagari et at.describes possible HRCT features of mild pulmonary fat embolism.1 The predominate pattern is defined regions of ground glass opacities. Other pattern include centrilobular opacities and septal thickening.1 Although these imaging patterns are non-specific when taken into clinical context can raise the possibility of fat embolism.