title: Pseudoenhancement of intervertebral disc herniation.
abstract: Two patients with intervertebral disc herniation appeared to demonstrate abnormally diffuse and intense enhancement of the disc after intravenous administration of gadolinium-DTPA for MRI. Surgery disclosed a dilated epidural venous plexus in one and vascular granulation tissue in the other, associated with the herniated disc material. The mechanism of this "pseudoenhancement" of the disc appears to be a partial volume effect of disc material and the adjacent veins or granulation tissue. Pseudoenhancement of a herniated disc should be included in the differential diagnosis of a diffusely enhancing epidural mass.
authors.affiliation: Department of Radiology, Osaka Rosai Hospital, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Araki
authors.forename: M
authors.initials: M
authors.lastname: Ootani
authors.forename: T
authors.initials: T
authors.lastname: Furukawa
authors.forename: T
authors.initials: T
authors.lastname: Yamamoto
authors.forename: I
authors.initials: I
authors.lastname: Tsukaguchi
authors.forename: M
authors.initials: M
authors.lastname: Mitomo
mesh_terms: D000368:Aged; D002648:Child; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000175:diagnosis* / Q000601:surgery; D008159:Lumbar Vertebrae / Q000473:pathology* / Q000601:surgery; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009942:Organometallic Compounds; D004369:Pentetic Acid
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D019786:Gadolinium DTPA