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Table 1: Univariate analysis to determine factors significant for survival in patients without metastases at diagnosis.

Factor NF1 Sporadic All patients 5 year survival (%) P 5 year survival (%) P 5 year survival (%) P Stage 1 100 100 100 2 46.2 .375 76.1 .079 71.1 .033 Site Lower limb 55.6 69.4 66.7 Upper limb 100 83.3 90.9 Brachial plexus 42.9 75.0 68.4 Sciatic plexus 50.0 .139 100 .035 88.9 .036 Volume 200 ml 57.1 85.7 82.9 200 ml 50.0 .119 66.7 .015 63.6 .002 Grade Low 44.4 74.2 70.0 High 50.0 .862 79.2 .713 73.4 .606 Depth Subcutaneous 50.0 90.0 83.3 Deep 50.0 .372 76.1 .755 72.2 .571