scientificamerican.com/arti...
When breast, lung and prostate cancers metastasize to multiple bones in the body, three to five times more cancer winds up in the spine than in the lower and upper limbs. Scientists have known of this disparity for decades, but the reason for it has remained unclear.
“When patients have spine metastasis, that’s usually toward the end of the line,” Goodwin said. Average survival, he said, is between 10 and 14 months once cancer reaches the spine, “with some patients surviving much less than that.”