神经科常见影像征象总结演示文稿.ppt

常春藤征 MoyaMoya病 本文档共81页；当前第31页；编辑于星期日\20点49分 虎眼征 Hallervorden-Spatz病 本文档共81页；当前第32页；编辑于星期日\20点49分 磨牙征 Joubert综合征 本文档共81页；当前第33页；编辑于星期日\20点49分 海蛇头征 本文档共81页；当前第34页；编辑于星期日\20点49分 关于脑膜尾征.一、An early clinical description of meningioma was reported in 1614 (5). Unfortunately, at that time the diagnosis could be made only after death. In 1902, George E. Pfahler, MD, then a resident physician, was able to offer a radiologic diagnosis on a living patient. Pfahler described the tumor shadow of a meningioma on conventional radiographs (5). In 1989, Wilms et al (1) described dural tails that were associated with meningiomas on MR images. 1614年即有关于脑膜瘤的临表报道.1902年,由George E. Pfahler, MD,提供了影象方面的诊断.患者当时在世.1989年,由Wilms等人提出,MR上硬膜尾与脑膜瘤的相关性. In 1990, Goldsher et al (2) published a report on 30 meningiomas, of which 60% had tails. The authors devised radiologic criteria to reliably establish the presence or absence of dural tails. Three criteria were adopted: (a) The tail should be identified on two successive sections through the tumor, (b) the tail should taper smoothly away from the tumor, and (c) the tail must have an enhancement greater than that of the tumor itself.1990年,Goldsher等人提出脑膜尾的影象诊断标准,即:1,至少连续出现于两个层面;2,尾巴(自肿瘤出发向外)逐渐变细;3,尾巴增强较肿瘤光亮. 本文档共81页；当前第35页；编辑于星期日\20点49分 No clear answer can be discerned from the literature as to why some tumors cause a dural tail and others do not. In the particular case of meningiomas, some investigators have noted tumor invasion, and others relate the tail to hypervascular reaction. These two common explanations (namely, aggressive infiltration and inflammatory reaction) are also noted for most of the nonmeningioma tumors.脑膜尾出现的病理生理学解释:1,肿瘤侵入性渗入;2,肿瘤富血管并导致局部炎症反应.To date, dural tails have been documented adjacent to chloroma, primary central nervous system lymphoma, sarcoidosis, vestibular schwannoma, metastatic tumor, syphilitic gumma, and an aggressive papillary middle ear tumor (7–10). 可以出现脑膜尾的其他肿瘤:PCNSL、转移瘤、神经鞘瘤、梅毒性树胶肿、绿