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CT images of a 29-year-old male with assault-related head trauma and a concomitant left orbital floor fracture (OFF). An axial head CT image (A) and the corresponding coronal facial CT image (B) show gas bubbles (black arrow) entrapped between the discontinuous floor fragments (white arrows). Left type 2 maxillary hemosinus (MHS) (arrowhead) and a left zygomatic fracture are also noted in (A).
