Lawson Caitlin M, Reichle Jean K, McKlveen Tori, Smith Mary O
Animal Surgical & Emergency Center, Los Angeles, CA 90025, USA.
Vet Radiol Ultrasound. 2011 Sep-Oct;52(5):487-91. doi: 10.1111/j.1740-8261.2011.01835.x. Epub 2011 Jun 20.
The radiographic and magnetic resonance imaging (MRI) findings for four dogs with herniation of the Cd1-Cd2 intervertebral disc are described. All dogs were 7 years of age at the time of presentation, with one neutered male and three neutered females. Breeds included one Beagle, one Bassett hound, and two large, mixed breed dogs. All dogs had tail pain on manipulation, two had pain during defecation, and two maintained an abnormal tail position. Three dogs had radiographs in which mineralization within the disc space was apparent. Two of these dogs also had mineralization within the vertebral canal. Three dogs underwent MRI, which was characterized by varying degrees of disc herniation and nerve root compression at Cd1-Cd2. Mobility may be a factor predisposing to disc herniation in the cranial aspect of the caudal spine. We documented that caudal disc herniation does occur occasionally in dogs and that radiography and MRI may be used to identify this disease. Caudal intervertebral disc herniation should be considered as a differential for dogs with caudal vertebral pain, pain with tail manipulation, pain during defecation, or abnormal tail carriage.
描述了四只患有第一尾椎（Cd1）-第二尾椎（Cd2）椎间盘突出症犬的X线和磁共振成像（MRI）检查结果。所有犬在就诊时均为7岁，其中一只为绝育雄性犬，三只为绝育雌性犬。品种包括一只比格犬、一只巴吉度猎犬和两只大型混种犬。所有犬在触摸尾巴时均有疼痛，两只犬在排便时有疼痛，两只犬保持异常的尾巴姿势。三只犬的X线片显示椎间盘间隙内有明显的矿化。其中两只犬的椎管内也有矿化。三只犬接受了MRI检查，其特征为Cd1-Cd2处不同程度的椎间盘突出和神经根受压。活动度可能是尾椎脊柱头侧椎间盘突出的一个易感因素。我们记录到犬偶尔会发生尾椎间盘突出，并且X线和MRI可用于识别这种疾病。对于有尾椎疼痛、触摸尾巴疼痛、排便时疼痛或尾巴姿势异常的犬，应考虑尾椎间盘突出作为鉴别诊断。
