"type A: spinal extradural AVF with an intradural draining vein"
"Extradural AVFs are usually treated endovascularly via embolisation. Usually, treated patients recover well; some may have mild residual bowel/bladder dysfunction. MRI findings, including spinal cord oedema, usually resolve after treatment 1."
"type 1 dural AVFs: the arteriovenous shunt lies within the nerve root sleeve and drains directly into an intradural vein; there is no filling of the epidural space 1"