Webb A A, Pharr J W, Lew L J, Tryon K A
Department of Veterinary Physiological Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada.
Vet Radiol Ultrasound. 2001 Jan-Feb;42(1):9-13. doi: 10.1111/j.1740-8261.2001.tb00897.x.
Intraspinal cysts of the L6-L7 and L7-S1 articular process joints in a six-year-old neutered female German Shepherd Dog were diagnosed using magnetic resonance (MR) imaging. Histopathology provided a diagnosis of ganglion cysts. Clinical, laboratory, radiographic and MR imaging findings are described. Briefly, radiographic findings revealed lumbarization of the first sacral vertebra, and fusion of the first caudal vertebra to the sacrum. In addition, spondylosis and articular process osteoarthrosis occurred at L6-L7 and L7-S1. MR imaging revealed multiple, well encapsulated structures ranging in size from 3-10 mm in diameter which were found to arise from the L6-L7 and L7-S1 articular process joints. These cysts had signal intensities that varied from hyperintense to the cerebrospinal fluid (CSF) on T1 weighted images to isointense to CSF on T2 weighted images. Decompressive surgery in conjunction with arthrodesis of these joints resulted in resolution of clinical signs. The dog remained pain-free 1 1/2 years following surgical therapy.
通过磁共振成像（MR）诊断了一只6岁绝育雌性德国牧羊犬L6-L7和L7-S1关节突关节的椎管内囊肿。组织病理学诊断为腱鞘囊肿。描述了临床、实验室、放射学和MR成像结果。简要地说，放射学检查结果显示第一骶椎腰化，第一尾椎与骶骨融合。此外，L6-L7和L7-S1出现了脊椎关节强硬和关节突骨关节炎。MR成像显示多个边界清晰的结构，直径为3-10毫米，这些结构起源于L6-L7和L7-S1关节突关节。这些囊肿在T1加权图像上的信号强度从高于脑脊液（CSF）到T2加权图像上与CSF等信号不等。这些关节的减压手术联合关节固定术使临床症状得到缓解。手术治疗后1年半，这只狗一直没有疼痛。
