RARA and Disseminated intravascular coagulation: PML-RARA by QPCR: Quantitative PCR for PML-RARA fusion gene; Promyelocytes in Bone Marrow Aspiration and Peripheral Blood Film: Percentage of promyelocytes in bone marrow and peripheral blood; Fibrinogen, D-Dimer, and Coagulation Profile: Indicators of disseminated intravascular coagulation (DIC); APTT: activated partial thromboplastin time; Bleeding PR: bleeding per rectum; SOB: shortness of breath; Lymphadenopathy (LNE): enlargement of lymph nodes; LDH: lactate dehydrogenase; INR: international normalised ratio