Pseudovacuum of the cervical intervertebral disc: a normal variant.

Abstract

A lucency in the intervertebral disc space at the superior margin is a normal variant related to Mach band phenomenon. This may easily be confused with a true vacuum sign in intervertebral disc injury. Patients with the pseudovacuum have no associated radiographic findings to suggest injury about the suspected disc space. A review of a group of normal… (More)

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