Department of Orthopaedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
JBJS Case Connect. 2022 Apr 1;12(2):01709767-202206000-00033. doi: e22.00027.
We report 3 cases of thoracic myelopathy caused by vertebral osteophytes and coexisting intradural spinal arachnoid cyst (SAC), which was difficult to diagnose on preoperative magnetic resonance imaging. Intraoperative ultrasound sonography revealed spinal cord impingement because of osteophytes and a pulsating intradural SAC. Repeated pincer compression on the spinal cord seemed to be associated with their paraparetic symptoms.
In treating patients presenting with unexplained progressive myelopathy with small ossified lesion in the thoracic spine, close attention should be paid to a coexisting SAC as a hidden aggravating factor for thoracic myelopathy.
我们报告了 3 例由椎骨骨赘和并存的硬脊膜内蛛网膜囊肿（SAC）引起的胸段脊髓病，这些病例在术前磁共振成像上难以诊断。术中超声显示，脊髓因骨赘和搏动性硬脊膜内 SAC 而受到压迫。脊髓的反复钳夹性压迫似乎与他们的截瘫症状有关。
对于表现为不明原因进行性脊髓病且胸段脊柱有小骨化病变的患者，应密切注意并存的 SAC，因为它是胸段脊髓病的一个潜在加重因素。
