title: Clinical and hematological profile of acute megakaryoblastic leukemia: a 2 year study.
abstract: Acute megakaryoblastic leukemia is a rare subtype of acute myeloid leukemia with a characteristic morphologic and immunophenotypic profile. It has to be distinguished from other subtypes of acute myeloid leukemia as well as acute myeloid leukemia with t (1; 22) (p13;q13) and acute megakaryoblastic leukemia in Down Syndrome because of its poor prognosis. We studied ten cases diagnosed over a period of 2 years (from July 2011 to June 2013). All the ten cases were in the pediatric age group ranging from 4 months to 2 years. On morphology, pointers to the diagnosis were clustering of blasts, presence of cytoplasmic blebs and platelet budding. An additional interesting morphological feature observed in our study was nuclear blebs which were seen in nine cases. Diagnosis was confirmed in all cases by positive immunostaining for CD61. Two of the cases had an extremely rare clinical presentation as granulocytic sarcoma. Although rare, acute megakaryoblastic leukemia should be kept in mind especially in leukemia in infants.
authors.affiliation: Department of Pathology, Regional Cancer Centre, Thiruvananthapuram, India.
authors.forename: A V
authors.initials: AV
authors.lastname: Jayasudha
authors.affiliation: Department of Pathology, Regional Cancer Centre, Thiruvananthapuram, India.
authors.forename: Rekha A
authors.initials: RA
authors.lastname: Nair
authors.affiliation: Department of Pathology, Regional Cancer Centre, Thiruvananthapuram, India.
authors.forename: Priya Mary
authors.initials: PM
authors.lastname: Jacob
authors.affiliation: Department of Pathology, Regional Cancer Centre, Thiruvananthapuram, India.
authors.forename: S
authors.initials: S
authors.lastname: Renu
authors.affiliation: Department of Pathology, Regional Cancer Centre, Thiruvananthapuram, India.
authors.forename: K R
authors.initials: KR
authors.lastname: Anila
authors.affiliation: Department of Pathology, Regional Cancer Centre, Thiruvananthapuram, India.
authors.forename: P
authors.initials: P
authors.lastname: Sindhu Nair
authors.affiliation: Department of Pediatrics, Regional Cancer Centre, Thiruvananthapuram, India.
authors.forename: T
authors.initials: T
authors.lastname: Priya Kumari
authors.affiliation: Department of Pediatrics, Regional Cancer Centre, Thiruvananthapuram, India.
authors.forename: P
authors.initials: P
authors.lastname: Kusuma Kumary
keywords: Acute megakaryoblastic leukemia; Flowcytometry; Granulocytic sarcoma ; Infants
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