MME and myelodysplastic syndrome: Recently, more emphasis has been placed the use of flow cytometry (FCM) in the diagnostic work-up of patients with MDS.27,20 Decreased or absent CD10 expression in the granulocyte series has been associated with MDS, and has been cited to occur in as much as 45% of MDS cases.16 Use of this marker has been proposed as a criterion in either diagnostic scoring systems4 or as supportive diagnostic criteria.27,16