We report on a case of methotrexate (MTX) intoxication occurring in a
19-year-old man treated for a leukemia. Exchange-transfusion (ET) was
performed in attempt to remove the MTX from the body. This exchange-tr
ansfusion was unable to decrease the MTX plasma concentration. This in
efficacy of ET in MTX intoxication is in contradiction with previously
reported recommendations. However, this result is easily explained by
MTX pharmacokinetics parameters.