Spinal dural arteriovenous fistula

Case contributed by Dr Anar Kazimov

Presentation

Low back pain, lame. Numbness in lower extremities. The patient feels progression in symptoms in last 2 years.

Patient Data

Age: 43
Gender: Male

Expansion and T2 hyperintensity of the lower thoracic and lumbar spinal cord. Prominent T2 signal voids within the thecal sac. 

Case Discussion

Spinal dural arteriovenous fistulae (SDAVF) are rare but are still the most common type of spinal vascular malformation. Veins are low pressure and low flow structures, so when a fistula forms blood from an artery under a high pressure goes directly into a vein causing venous hypertension and congestion of the cord with oedema resulting in cord expansion and T2 hyperintensity. The etiology is unknown. The best sequence to depict the extent of SDAVFs without using intravenous contrast agent is gradient-echo 3D ciss (constructive interference in steady state) sequences.

PlayAdd to Share

Case information

rID: 49156
Case created: 12th Nov 2016
Last edited: 16th Nov 2016
Inclusion in quiz mode: Included

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.