ven accontinuous IV infusion of 1-cyclopropyl-3-[3-(5-morpholin-4-ylmethyl-1H-benzoimidazol-2-yl)-1H-pyrazol-4-yl]-urea or a salt thereof such as the lactate (particularly the L-lactate) or citrate salt, for periods of 2 hour to 120 hour, for example 2 to 96 hour in particular for 24 to 72 hour and the treatment repeated at a desired interval such as every one to three weeks.More particularly, a p