[Prolymphocytic leukaemia: a new clinical entity (author's transl)].

A 67-year-old woman, at first diagnosed to have acute lymphocytic leukaemia, developed all the characteristic signs of so-called prolymphocytic leukaemia, namely severe general symptoms of illness, marked hepatosplenomegaly in the absence of lymphadenopathy, extreme leukocytosis (at times more than 1000 x 10(9)/l). Prolymphocytic leukaemia is now considered to be an especially unfavourable form of chronic lymphocytic leukaemia.