Chronic Childhood Idiopathic Myelofibrosis in Down's Syndrome: A Case Report

Area of Science:

• Hematology
• Pediatric Oncology
• Genetics

Background:

• Idiopathic myelofibrosis (IMF) is a rare myeloproliferative neoplasm typically affecting the elderly.
• Childhood IMF is exceptionally rare, with limited case reports in the literature.

Observation:

• A unique case of chronic idiopathic myelofibrosis in an 8-year-old boy with Down syndrome is presented.
• The patient exhibited progressive pallor and significant hepatosplenomegaly.
• Peripheral blood analysis revealed pancytopenia, macrocytic anemia, and characteristic tear drop cells.

Findings:

• Bone marrow examination showed a dry tap, with trephine biopsy confirming marrow fibrosis and osteosclerosis.
• Increased megakaryocytes with atypical morphology were noted focally, without evidence of blasts.
• Literature review identified 47 childhood IMF cases, with 6 associated with Down syndrome, and only 3 presenting with chronic IMF features without acute megakaryoblastic leukemia.

Implications:

• This case expands the understanding of idiopathic myelofibrosis in pediatric populations, particularly in individuals with Down syndrome.
• It underscores the importance of considering rare hematological malignancies in children presenting with cytopenias and organomegaly.
• Further research into the pathogenesis and management of childhood IMF, especially in association with genetic syndromes, is warranted.