A fistula is a common expression for an abnormal link of blood vessels. Arteriovenous fistulas can materialize from the tissue that covers your brain and spinal wire. AVMs can materialize within your brain’s tissues. Fistulas tend to be more typically associated with head trauma or an infection than AVMs. kisah https://www.sgvascularctr.com/understanding-venous-malformation-treatments-in-singapore/