A acute monocytic leukemia that occurs in an adult. The disease is Monarch Disease Ontology term MONDO_0000875 (adult acute monocytic leukemia). Also known as: M5b adult acute differentiated monocytic leukaemia, M5b adult acute differentiated monocytic leukemia, M5b adult acute leukaemia, M5b adult acute leukemia, acute monocytic leukaemia of adults, acute monocytic leukemia of adults, adult acute differentiated monocytic leukaemia (M5b), adult acute differentiated monocytic leukemia (M5b).