title: Vacuum phenomenon within the cervical spinal canal: CT demonstration of a herniated disc.
abstract: Gas within the cervical spinal canal in association with a surgically proven herniated disc is demonstrated by computed tomography. Although rarely seen and never previously reported, this unmistakable roentgen sign provides strong evidence for a herniated disc in the cervical as well as lumbar spine.
mesh_terms: D002574:Cervical Vertebrae; D005740:Gases; D006801:Humans; D007403:Intervertebral Disc / Q000000981:diagnostic imaging / Q000502:physiology; D007405:Intervertebral Disc Displacement / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D013115:Spinal Canal / Q000000981:diagnostic imaging* / Q000502:physiology; D014057:Tomography, X-Ray Computed
chemical_list: D005740:Gases