Conclusion Most aneurysms presented with intracranial mass are giant aneurysms and always filled with embolus.Further more, some even obstructed spontaneously.

• 结论：表现为颅内占位的动脉瘤多较巨大，瘤内多有血栓形成，载瘤动脉甚至有发生自闭的可能。