Dural fistula, case 2
Clinical history
This 33-year-old male patient presented with gait disturbances as well as urinary and fecal disturbances. He experienced erection problems
Neurological examination
Neurological examination showed no sensory deficit. Minor asymmetry of knee and ankle reflexes.
MRI findings
Image 1: Sagittal T1WI. Mild cord enlargement at the lower thoracic level without clear signal abnormalities
Image 2: Sagittal T2WI. Two hyperintense areas (arrows) are well seen on this pulse sequence in the lower thoracic cord and conus medullaris.
Image 3: Sagittal GdT1WI. Moderate but definite contrast enhancement after Gadolinium injection is seen within the conus (arrow). Prominent vessels are seen on the posterior surface of the cord showing some enhancement as well (arrowheads).
Image 4: Myelo-MRI show definite abnormal tortuous vessels (arrows) suggesting a dural fistula. a. MIP (Maximal Intensity Projection) of a coronal 2D heavily T2 weighted acquisition. b. MIP of a coronal 3D acquisition and c. Sagittal MIP.
Images 5 - 6 - 7 - 8: Spinal Angiography (Courtesy Dr. Georges Rodesch).
Selective spinal angiogram was performed which confirmed the diagnosis of dural fistula with perimedullary venous drainage.
The artery of Adamckiewicz (arrows) was supplied by the right TH 9 posterior intercostal artery (image 5). Capillaro-venous stagnation of contrast medium was observed after selective injection of the artery of Adamckiewicz. Those findings confirmed the increased venous pressure. The vascular malformation was fed by a radiculo-dural branch of the right TH11 intercostal artery (arrow) (image 6). The AV malformation was located at the level of the dura. Venous drainage (image7) (arrows) was provided by the TH11 radicular vein which was connected with the peri-medullary venous plexus. Venous hypertension around the conus was clearly shown on angiography.
The lesion was embolized after selective catheterization of the feeding artery (image 8).
Clinical evolution
Immediate improvement of the patient's condition was observed after embolisation. Control selective medullary angiography confirmed successful embolization (image 9).
Search also:
- AVM, Dural fistulae
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Dural fistula, case 2, Fig. 1 | | Dural fistula, case 2, Fig. 2 | | Dural fistula, case 2, Fig. 3 |
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Dural fistula, case 2, Fig. 4 | | Dural fistula, case 2, Fig. 5 | | Dural fistula, case 2, Fig. 6 |
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Dural fistula, case 2, Fig. 7 | | Dural fistula, case 2, Fig. 8 | | Dural fistula, case 2, Fig. 9 |