Researchers have identified a new diarrheal syndrome that affects patients who have undergone cord-blood hematopoietic stem-cell transplantation, according to a report in the Sept. 1 issue of the New England Journal of Medicine.It is important to distinguish the new syndrome, which they call "cord colitis syndrome," from other causes of diarrheal illness that have a similar initial presentation in this patient population - notably graft-versus-host disease (GVHD) - because treatment differs. Cord...