Figure 1.

Comparison of lumbar vertebrae metastases between breast and prostate carcinomas. The results show that with an increase in the number of metastatic bone lesions, the proportion of metastatic lumbar lesions of breast carcinoma gradually decreased (χ²=11.3, P=0.003), but that in prostate carcinoma markedly decreased (χ²=56.1, P=0.000). In the few bone metastases group, the proportion of metastatic lumbar lesions of prostate carcinoma was significantly higher than that of breast carcinoma (39.7 vs. 13.9%, χ²=15.4, P=0.000).