磁共振显现脊髓中央管丝状扩张的临床研究

Filiform - like enlargement of spinal central canal on MRI

目的研究MRI显现脊髓中央纵向丝状液性管腔，提示脊髓中央管轻度扩张的意义。方法总结30例MRI检查显现脊髓中央纵向丝状液性管腔，横径1～2mm的意义，并排除脊髓积水的已知病因。结果均合并有脊柱畸形，以脊柱侧凸为主。临床症状和电生理检查未提示有脊髓神经损害。讨论MRI显现丝状脊髓中央管，提示其轻度扩张，与脊髓积水不同，无临床神经损害症状和进展，不需要积极干预，可直接进行骨科矫形手术。

Objective Filiform- like enlarged central canal without reasonable cause detected by magnetic resonance image（MRI） was studied and reported. Method 30 patients with an intramedullary filiform -like cavity（ 1 - 2 mm in diameter） were identified through MRI in our hospital from 2003 to 2005. Main causes of hydromyelia, such as anatomical factors of Chiari malformation, hydrocephalus, spinal cord malformation ,tumor, trauma, and inflammation, were excluded among these patients. Results All the 30 patients had spine malformation, and most of them （21 of 30） were diagnosed as adolescent idiopathic scoliosis（AIS）. The slightly clinical manifestations were identified but no obviously neurological damage and no changes were found in follow up, which meant no additional medical interference was needed. Conclusions The filiform - like cavity intramedullary in MRI image can be identified as the central of the spinal cord with slightly enlargement; however, this enlargement of spinal central canal was different from hydromyelia and no treatments were needed.