A 36-year-old female patient complains of bruises on the body, gingival hemorrhage, general weakness. A month ago she had a severe domestic poisoning with some pesticide (the patient can not remember the name). She has a 7-year record of working in contact with petroleum products, particularly benzene. In blood: RBCs - 3,2 × 1012/l, WBCs -2,7 × 109/l, thrombocytes - 70 × 109/l. What is the most likely pathology?