Liu S S, Williams K D, Drayer B P, Spetzler R F, Sonntag V K
Department of Neurological Surgery, Barrow Neurological Institute, Phoenix, AZ 85013.
AJR Am J Roentgenol. 1990 Jan;154(1):163-6. doi: 10.2214/ajr.154.1.2104702.
Intraspinal synovial or ganglion cysts are uncommon lesions associated with degenerative lumbosacral spine disease. CT usually reveals cystic lesions adjacent to a facet joint, and they may show calcification. MR imaging of four surgically confirmed cases of intraspinal synovial cysts revealed subtle signal changes compared with CSF. Short TR/TE images showed the lesions to be slightly hyperintense in three cases and isointense in one case. Long TR/TE sequences revealed a hyperintense appearance in two cases and a hypointense appearance in the others. A peripheral rim of decreased signal on long TR/TE images probably reflects fine calcification or hemorrhage in the margins of the cysts. The multiplanar and contrast characteristics of MR make this technique well suited to the diagnosis of herniated disk, degenerative facet disease, and synovial cyst.
椎管内滑膜囊肿或神经节囊肿是与退行性腰骶部脊柱疾病相关的罕见病变。CT通常显示与小关节相邻的囊性病变，且可能出现钙化。对4例经手术证实的椎管内滑膜囊肿病例进行的磁共振成像显示，与脑脊液相比有细微的信号变化。短TR/TE图像显示3例病变呈轻度高信号，1例呈等信号。长TR/TE序列显示2例呈高信号，其他病例呈低信号。长TR/TE图像上信号降低的周边环可能反映了囊肿边缘的细微钙化或出血。磁共振成像的多平面及对比特征使其非常适合诊断椎间盘突出、退行性小关节疾病和滑膜囊肿。
