De Frias João Miguel, Bhatti Sofie F M, Nye George, Gonçalves Rita, Harcourt-Brown Tom, Fadda Angela, Marioni-Henry Katia, Padley Hannah, De Decker Steven
Department of Clinical Science and Services, Royal Veterinary College, University of London, London, UK.
The Royal (Dick) School of Veterinary Studies Hospital for Small Animals, University of Edinburgh, Midlothian, UK.
J Vet Intern Med. 2025 Jan-Feb;39(1):e17294. doi: 10.1111/jvim.17294.
Spinal arachnoid diverticulum (SAD) is considered a rare disease in cats. Previous reports mainly classified SAD in cats as acquired.
HYPOTHESIS/OBJECTIVES: The aim of this study was to describe the signalment, clinical presentation, diagnostic imaging findings, and outcome in a group of cats with SAD.
Twenty-one client-owned cats.
Multicenter observational retrospective review of the medical records of cats diagnosed with SAD by magnetic resonance imaging.
Most cats were Domestic Short Hair (67%), male (63%), and had a wide range of ages (18 weeks to 13 years old). Neuroanatomical localization was consistent with a T3-L3 myelopathy in 18 cats (86%) and C1-C5 myelopathy in 3 cats (14%). One cat with a C1-C5 myelopathy demonstrated bilateral vestibular clinical signs. One cat (5%) had fecal incontinence. Most cats demonstrated a chronic, progressive, nonlateralized, nonpainful myelopathy. No underlying previous or concurrent spinal condition was found in 48% of the cats. No difference in age, body weight, breed, sex, treatment, or outcome was found between cats with or without a concurrent spinal disorder. One cat was euthanized after diagnosis. Six cats improved, 1 deteriorated and 1 remained static after surgery, whereas 3 cats improved, 5 deteriorated and 4 remained static after medical management on the short-term outcome. Overall, 73% (8/11) of the cats deteriorated on available long-term follow-up information.
Spinal arachnoid diverticulum should be considered for cats with chronic, progressive, symmetrical, nonpainful myelopathy, particularly if male and with a history of spinal disease or surgery.
脊髓蛛网膜憩室（SAD）在猫中被认为是一种罕见疾病。先前的报告主要将猫的SAD归类为后天性疾病。
假设/目的：本研究的目的是描述一组患有SAD的猫的特征、临床表现、诊断性影像学检查结果及预后。
21只客户拥有的猫。
对通过磁共振成像诊断为SAD的猫的病历进行多中心观察性回顾。
大多数猫为家猫（67%），雄性（63%），年龄范围广泛（18周龄至13岁）。神经解剖定位显示18只猫（86%）符合T3 - L3脊髓病，3只猫（14%）符合C1 - C5脊髓病。1只患有C1 - C5脊髓病的猫表现出双侧前庭临床症状。1只猫（5%）有大便失禁。大多数猫表现为慢性、进行性、非偏侧性、无痛性脊髓病。48%的猫未发现潜在的既往或并发脊柱疾病。有无并发脊柱疾病的猫在年龄、体重、品种、性别、治疗或预后方面均无差异。1只猫在诊断后实施安乐死。短期预后方面，6只猫术后改善，1只恶化，1只无变化；而药物治疗后，3只猫改善，5只恶化，4只无变化。总体而言，根据现有的长期随访信息，73%（8/11）的猫病情恶化。
对于患有慢性、进行性、对称性、无痛性脊髓病的猫，应考虑脊髓蛛网膜憩室，特别是雄性且有脊柱疾病或手术史的猫。
