ACQUIRED DURAL ARTERIOVENOUS-MALFORMATIONS OF THE LUMBAR SPINE - CASE-REPORT

OBJECTIVE AND IMPORTANCE: Although dural arteriovenous malformations ( AVMs) are considered to be acquired, no conclusive evidence has been o btained, The first case of dural AVMs of the lumbar spine that showed evidence supporting their being acquired lesions is described. CLINICA L PRESENTATION: A 27-year-old man was admitted to our hospital in Nove mber 1994, presenting with increasing pain and numbness in the left bu ttock to the left lower limb. Myelography and arteriography showed dur al AVMs of the lumbar spine. However, the myelogram obtained before su rgery for lumbar disc herniation in 1987 provided no findings suggesti ve of intradural vascular anomalies. INTERVENTION: Embolization proced ures via the left iliolumbar arteries were performed. However, there w as no improvement of the symptoms, and the patient underwent surgical treatment. CONCLUSION: The present report documents a case of dural AV Ms of the lumbar spine that showed evidence supporting their being acq uired lesions.