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The lower spinal cord / conus medullaris appears swollen & edematous (cytotoxic oedema / myelomalacia) associated with surrounding prominent serpiginous intradural extramedullary flow voids (dilated perimedullary vessels) extending down around the filum terminale. Heterogeneous low signal intensity on GRE images also noted suggestive of cord hemorrhage. Patchy intramedullary enhancement is also noted.
Findings are highly suggestive of spinal dural arterio-venous fistula/malformation.