The ratio of positive expression of the Aurora Kinase A was 33.3%and 92.9% inIandII-III stage of the conventional chondrosarcoma, respectively (p<0.01); the more malignant tumor, the higher expression of the Aurora Kinase A. The ratio of positive expression was 90% and 51.9% in the group with and without recurrence, respectively (p<0.05). This evidence concerns the gene AURKA and neoplasm.