Spider veins, also known as telangiectasias or thread veins, resemble spider webs or tree branches. They occur when damage to blood vessels close to the skin's surface causes them to widen. Spider ...

Context Explanation

In general, central nervous system (CNS) vascular malformations fit into the following categories, in order of decreasing prevalence: developmental venous anomalies (DVAs), arteriovenous malformations ...