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目的探讨骶部硬膜外囊肿的临床影像学与病理特点。方法本组18例均行腰骶部及骨盆X线平片检查,其中17例行CT扫描、11例行MRI检查、7例行脊髓造影、4例行脊髓造影CT(CTM)扫描,结合文献分析其影像学表现。结果本病临床误诊率为78%,X线诊断率17%,CT诊断率72%,MRI检查、脊髓造影、CTM扫描诊断率100%。18例均手术切除,病理报告为硬膜外囊肿,椎管内型13例、椎管外型3例及混合型2例。随访15~32个月,平均24个月,未发现症状加重和复发病例。结论骶部硬膜外囊肿为椎管内或椎管外通过颈口与蛛网膜下腔相通的硬膜外囊性肿物,临床和影像学具有特征性表现。
Objective To investigate the clinical imaging and pathological features of sacral epidural cysts. Methods 18 patients underwent X-ray examination of lumbosacral region and pelvis. Seventeen patients underwent CT scan, 11 patients underwent MRI examination, 7 patients underwent myelography and 4 patients underwent CT scan. Analysis of its imaging performance. Results The clinical misdiagnosis rate was 78%, X-ray diagnosis rate was 17%, CT diagnosis rate was 72%, MRI examination, myelography and CTM scan diagnosis rate was 100%. Eighteen patients underwent surgical resection. The pathology was reported as epidural cyst, 13 cases of intraspinal canal, 3 cases of spinal canal and 2 cases of mixed type. Follow-up 15 to 32 months, an average of 24 months, no symptoms and recurrence were found. Conclusion The sacral epidural cyst is an epidural cystic mass communicating with the subarachnoid space through the cervical canal in the spinal canal or the spinal canal. Clinical and radiological features are characteristic.