Treatment One of the rare leukaemia where treatment is an emergency, as intra vascular coagulation is prominent, causing a high rate (10 to 40%) of early mortality, mainly due to cerebral haemorrhage; with the recent differentiation therapy using all trans-retinoic acid (with combined chemotherapy), CR is obtained in 8090% of cases; this is the only cancer which, to date, can be treated by diff...