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[Werner's syndrome developing acute megakaryoblastic leukemia with der(1;7)]
T Yamada1, H Tsurumi, N Murakami
1First Department of Internal Medicine, Gift University School of Medicine.
[Rinsho Ketsueki] the Japanese Journal of Clinical Hematology
|January 1, 1997
Summary
This case study details a rare instance of acute megakaryoblastic leukemia developing in a patient with Werner syndrome, a rare genetic disorder. The leukemia presented with specific chromosomal abnormalities and bone marrow changes.
Area of Science:
- Hematology
- Oncology
- Genetics
Background:
- Werner syndrome is a rare autosomal recessive disorder characterized by premature aging.
- Patients with Werner syndrome have an increased risk of developing malignancies, including hematological disorders.
Observation:
- A 46-year-old man with Werner syndrome presented with epigastric pain and weight loss.
- Initial findings included anemia, thrombocytosis, eosinophilia, and bone marrow evidence of myelodysplastic changes, myelofibrosis, and increased megakaryocytes.
Findings:
- Chromosomal analysis revealed a complex karyotype: 46, XY, +der(1;7), -7, del(20).
- The patient progressed to pancytopenia with an increase in CD41-positive, myeloperoxidase-negative blasts, indicative of acute megakaryoblastic leukemia.
- Autopsy confirmed severe myelofibrosis with blast and megakaryocyte proliferation.
Implications:
- This case highlights an extremely rare association between Werner syndrome and acute megakaryoblastic leukemia with a specific chromosomal abnormality (der(1;7)).
- It underscores the importance of vigilant hematological monitoring in patients with Werner syndrome due to their predisposition to hematologic malignancies.