Reddy K K, Del Bigio M R, Sutherland G R
Department of Surgery (Neurosurgery), University of Manitoba, Winnipeg, Canada.
J Neurosurg. 1989 Aug;71(2):239-43. doi: 10.3171/jns.1989.71.2.0239.
Although posttraumatic syringomyelia is a well-established clinicopathological entity, there is a paucity of information on the ultrastructural features of this condition. This study documents the light and electron microscopic features of posttraumatic syringes obtained from two patients who underwent surgical cordectomy. The syringes were lined largely by cell processes of astrocytes. Small regions near the caudal end were lined by flattened ependymal cells that lacked surface specializations. These were thought to represent remnants of the central canal ependyma. The ultrastructural appearance of the syrinx was similar to that of the communicating syringomyelia as well as the periventricular changes that accompany hydrocephalus. The authors conclude that the changes represent the nonspecific sequelae of a distensile force within the syrinx cavity.
尽管创伤后脊髓空洞症是一种已被充分认识的临床病理实体，但关于这种疾病超微结构特征的信息却很少。本研究记录了两名接受脊髓切除术患者的创伤后脊髓空洞的光镜和电镜特征。脊髓空洞主要由星形胶质细胞的细胞突起衬里。尾端附近的小区域由缺乏表面特化的扁平室管膜细胞衬里。这些被认为代表中央管室管膜的残余部分。脊髓空洞的超微结构外观与交通性脊髓空洞症以及脑积水伴随的脑室周围变化相似。作者得出结论，这些变化代表脊髓空洞腔内扩张力的非特异性后遗症。
