Sciatic symptoms and positive sciatic findings may represent a leading, but at the same time missleading symptom of a spinal tumor in every possible level for months and years ahead. The study of literature--so far scarcely taken notice of in German speaking Countries--as well as own observations lead to an organisation or array of the atypical symptoms, i.e. remote symptoms of tumors above the 12th thoracic vertebra shown as predominantly "central pseudoperipheral sciatica", more rare general peripheral findings in the lumbosacral region due to early tumoral irritation of the spinothalamic tract or the dorsal funiculi or congestional changes of the spinal fluid as well in the vascular apparatus. Tumors below the level of the 12th thoracic vertebra show an almost indistinguishable mixture of remote and local symptoms of the above nature preceeding typical clinical tumor manifestations.
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