Extraspinal dural arteriovenous fistula in a patient with lipomyelodysplasia: value of MRI and MRA.
Spinal dural arteriovenous fistulae are extremely rare in spinal dysraphism. A fistulous malformation within a lipomyelomeningocele has not been reported previously. A 50-year-old man presented with progressive paraparesis and bladder dysfunction. MRI revealed a large lumbar lipomyelomeningocele. A vascular malformation was indicated by abnormal signal in the thoracolumbar spinal cord and dilated perimedullary veins. Phase-contrast MRA demonstrated only the slow-flow veins of the fistula and an intradural ascending vein. Contrast-enhanced ultra-fast MRA gave excellent delineation of all parts of the fistula within the dysraphic lesion.
König
M
M
Department of Radiology and Nuclear Medicine, Ruhr University of Bochum, Knappschaftskrankenhaus Langendreer, In der Schornau 23/25, D-44892 Bochum, Germany. Koenig@ruhr-uni-bochum.de
Hentsch
A
A
Schmieder
K
K
Harders
A
A
Heuser
L
L
D001164:Arteriovenous Fistula / Q000175:diagnosis* / Q000209:etiology; D003937:Diagnosis, Differential; D004388:Dura Mater / Q000098:blood supply*; D006801:Humans; D008067:Lipoma / Q000150:complications* / Q000473:pathology; D008161:Lumbosacral Region / Q000473:pathology; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009436:Neural Tube Defects / Q000150:complications* / Q000473:pathology; D013116:Spinal Cord / Q000473:pathology