Comment

摘要

The authors hypothesize that a cerebral AVM consists of two independent components which are relevant for occlusion following radiosurgery (RS). One is the nidus and the other one are high flow shunts (HFS) within the AVM which may or may not be present. They further hypothesize that the response rate to RS is different for the nidus and for HFS with HFS being more radioresistant. The literature on this topic is controversial (1, 2).