Diagnostic Approach to Anemia with Bicytopenia

Introduction to Diagnostic Considerations

Microcytic anemia can occur in Myelodysplastic Syndrome (MDS), particularly with ring sideroblasts, according to the American Society of Hematology 1
A strong family history of malignancies, such as rectal cancer, increases suspicion for occult gastrointestinal malignancy, as suggested by the National Comprehensive Cancer Network 2
Elevated ferritin with low serum iron suggests iron sequestration rather than true depletion, which is a common finding in anemia of chronic disease, as noted by the European Hematology Association 2

Bidirectional endoscopy (EGD and colonoscopy) is mandatory in patients over 50 with anemia and a family history of GI malignancy, as recommended by the American College of Gastroenterology 2
Bone marrow aspiration and biopsy, including cytogenetics and flow cytometry, are crucial for evaluating MDS, as stated by the International Working Group for the Diagnosis, Standardization of Response Criteria, Treatment Outcomes, and Reporting Standards for Therapeutic Trials in Acute Myeloid Leukemia 1
Iron staining to assess for ring sideroblasts and cellularity assessment are important components of the bone marrow evaluation, according to the World Health Organization 5

Avoid empiric iron therapy initially, as elevated ferritin suggests iron is not the primary issue, and iron therapy could worsen iron overload if this is a sideroblastic anemia or genetic disorder, as cautioned by the American Society of Hematology 5
Do not start oral iron empirically, with ferritin 382 μg/L, as this could worsen iron overload if sideroblastic anemia or genetic disorder present, as warned by the European Hematology Association 7
Intravenous iron is preferred over oral iron in patients with functional iron deficiency and chronic disease, given elevated ferritin and likely inflammation, as recommended by the National Institute for Health and Care Excellence 7