post-transplant lymphoproliferative disorder
(post-TRANZ-plant LIM-foh-proh-LIH-feh-ruh-tiv dis-OR-der)
A condition in which a group of B-cells grow out of control after an organ transplant in patients with weakened immune systems. This usually happens if the patient has also been infected with Epstein-Barr virus. Post-transplant lymphoproliferative disorder may progress to non-Hodgkin lymphoma. Also called PTLD.