New blood test may someday help guide the best treatment for aggressive prostate cancer

By: Charlie Schmidt, Editor, Harvard Medical School Annual Report on Prostate Disease Tumors that spread, or metastasize, in the body shed cells into blood that doctors can scrutinize for insights into what a patient’s cancer might do. Analyzing these so-called circulating tumor cells (CTCs) isn’t part of routine care yet, in part because they’re so hard to pick out of the millions of normal cells in a blood sample. Still, scientists are making…