Neugroschl C, Kehrli P, Gigaud M, Ragragui O, Maitrot D, Manelfe C, Dietemann J L
Department of Neuroradiology, CHU Hautepierre, F-67098 Strasbourg, France.
Neuroradiology. 1999 Sep;41(9):630-5. doi: 10.1007/s002340050815.
We report three patients with a sequestrated disc fragment posterior to the thecal sac. The affected disc was lumbar in two cases and thoracic in the third. Disc fragment migration is usually limited to the anterior extra dural space. Migration of a disc fragment behind the dural sac is seldom encountered. MRI appears to be the method of choice to make this diagnosis. The disc fragments gave low signal on T1- and slightly high signal on T2-weighted images and showed rim contrast enhancement. The differential diagnosis includes abscess, metastatic tumour and haematoma.
我们报告了3例硬脊膜囊后方存在椎间盘游离碎片的患者。其中2例受累椎间盘位于腰椎，第3例位于胸椎。椎间盘碎片移位通常局限于硬膜外前间隙。硬膜囊后方的椎间盘碎片移位很少见。MRI似乎是做出该诊断的首选方法。椎间盘碎片在T1加权图像上呈低信号，在T2加权图像上呈稍高信号，并显示边缘强化。鉴别诊断包括脓肿、转移性肿瘤和血肿。
