[The question of bone marrow cell proliferation in Di-Guglielmo's syndrome].

In a patient with a di Guglielmo's syndrome DNA was determined cytophometrically in the bone-marrow cells. The results show that the proliferation of paraerythroblasts is increased in the phase of erythremia in comparison to normal erythropoiesis. The proliferation of myeloblasts during the stage of myeloblastomatosis, however, is low similar to the majority of acute leukaemias. The examinations confirm the view that the di Guglielmo's syndrome represents a form of acute leukaemia.