Objective: To discuss the causes of misdiagnosis of the spinal cord tumor. Method: Through reviewing, the causes of the misdiagnosis of l3 outpatients of spinal cord tumor aresummarized. Comect diagnosis of them was established through further examination during hospitalization and the prilmary foci were identified. Result: As metastatic seinal cord tumor in its early stage does not manifest symptoms of the primary disease and the primary tumors of some patients were difficult to be found. the route of metastasis of metastatic spinal cord tumor may not go th rough systemic circulation, thus causing no metastatic pulmonary foci. This is an anatomic feature of the independent existence of the metastatic spinal cord tumor different from other kinds of metastatic tumors and becomes one of the causes for the misdiagnosis of clinical metastatic spinal cord tumor. Conclusion: The clinician should be aware of the possibility of the existence of tumor in cases which show initial symptoms of spinal cord disease similar to those of rheumatic disease and should guard against summarily diagnosing it as a rheumatic disease.%目的：探讨脊柱肿瘤临床误诊的原因。方法：回顾性总结13例门诊误诊的脊柱肿瘤病例，通过住院检查确诊，并尽量找出原发病灶。结果：早期脊柱转移瘤往往缺乏原发病症状而且部分患者原发瘤很难发现，脊柱转移瘤的转移途径可不经体循环因而可以没有肺转移灶，这是脊柱转移瘤能够独立存在而不同于其他转移瘤的解剖特点，是造成临床脊拄转移瘤容易误诊的原因之一。结论：对于以风湿病症状为首发症状的脊柱病，忌随便诊断为某种风湿病，要警惕肿瘤的可能性。
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