SPONTANEOUS DISAPPEARANCE OF AN ANEURYSMAL MALFORMATION OF THE VEIN OF GALEN

We describe spontaneous disappearance of an aneurysmal malformation of the vein of Galen (AMG), an anomaly that occurs most often in childre n, with a high mortality due to the accompanying severe cardiac failur e. Spontaneous thrombosis of an AMG is rare. In this case, the AMG has been closed for about 5 years, without radiological evidence of throm bosis, and no active treatment. Proposed mechanisms of spontaneous thr ombosis include slow flow shunts and severe obstruction of the venous outflow. However, in this case, the disappearance of the AMG without e vidence of thrombosis indicates a different mechanisms, namely, obstru ction of the feeding artery.