Legend A longitudinal fracture is present in the left temporal bone, seen on these axial images, which involves the middle ear cavity and extends anteriorly along the petrous bone in the region of the genu of the facial nerve. The middle ear cavity and most of the mastoid air cells are abnormally opacified. Compare this with the normally aerated epitympanum on the left image. The ossicles are in normal position.

Legend Axial (right), and direct coronal (left) images again demonstrate a longitudinal fracture and abnormal opacification of the middle air. The fracture extends through the tegmen (roof of the left tympanic cavity). Key words: trauma

ENT Diagnosis: Longitudinal temporal bone fracture