It's well known that organ transplants can pass infectious diseases from donors to recipients in rare cases. But even more rarely, transplants can transmit cancer, as a new case shows. In what's being described as an "extraordinary case," four people in Europe developed breast cancer after they received organs from the same donor, according to a new report. Three of the patients died from the cancer, which underscores the "often-fatal consequences of donor-derived breast cancer," the authors wrote in their report, published in the July issue of the American Journal of Transplantation Passing cancer through an organ transplant is "a...