Acute megakaryoblastic leukemia with increased hematogones in children

Area of Science:

• Pediatric Hematology Oncology
• Hematologic Malignancies
• Cellular Biology

Background:

• Acute megakaryoblastic leukemia (M7) is a rare subtype of acute myeloid leukemia.
• Diagnosis can be challenging due to overlapping features with other hematologic conditions.
• Understanding M7 in pediatric patients is crucial for effective treatment strategies.

Observation:

• Two pediatric patients, a 4-month-old male and a 17-month-old female, presented with thrombocytopenia.
• Bone marrow examination revealed features consistent with M7, with one patient showing 60% leukemic cells.
• Flow cytometry identified increased hematogones (38% and 20%) with an absence of blasts in initial analyses.

Findings:

• Despite initial diagnostic challenges, including a dry tap aspirate in one patient, repeated investigations confirmed M7.
• Immunophenotypic and molecular studies were essential in solidifying the diagnosis.
• Both patients were treated according to the established Berlin-Frankfurt-Munster 2004 protocol.

Implications:

• This case series highlights the importance of comprehensive diagnostic workup for pediatric acute megakaryoblastic leukemia.
• The presence of increased hematogones alongside M7 warrants careful consideration during diagnosis.
• Adherence to standardized treatment protocols like the Berlin-Frankfurt-Munster 2004 protocol is vital for improving outcomes in pediatric M7.