logo logo
Search: Organ site Search: Tumor / Syndrome
or
WHO Classification of Tumours
Acute monoblastic and monocytic leukaemia
Tumours of haematopoietic and lymphoid tissues


Definition

Acute monoblastic leukaemia and acute monocytic leukaemia are myeloid leukaemias in which 80% or more of the leukaemic cells are of monocytic lineage including monoblasts, promonocytes and monocytes; a minor neutrophil component, <20%, may be present. Acute monoblastic leukaemia and acute monocytic leukaemia are distinguished by the relative proportions of monoblasts and promonocytes. In acute monoblastic leukaemia, the majority of the monocytic cells are monoblasts (typically ≥80%). In acute monocytic leukaemia, the majority of the monocytic cells are promonocytes.

> Related Topics
Introduction: AML, not otherwise specified (AML, NOS)
Introduction: Myeloid Neoplasms