French-American-British Classification

**Semantic type:** Classification

**Definition:** A classification system for acute myeloid leukemias, acute lymphoblastic leukemias, and myelodysplastic syndromes. It is based on the morphologic and cytochemical evaluation of bone marrow and peripheral blood smears.

**Synonyms:** - FAB - FAB Classification for Bone Marrow - FAB_TYPE - French-American-British Classification System - fab morphology code - fab_morphology_code