<prompt> Basophillic leucocytosis occurs in --AMLALLCMLCLL  <response>: Basophil leukocytosis or basophilia refers to an increase in the number of basophilic leucocytes above 100 per microlitre.Seen in CML, POLYCYTHEMIA VERA, MYELOSCLEROSIS,MYXOEDEMA,ULCERATIVE COLITIS,FOLLOWING SPLENECTOMY, HODGKIN;S DISEASE, UICARIA PIGMENTOSA. Reference; Harsh Mohan textbook of pathology, 7th edition.Pg no.329 