Which term describes a group of bone marrow disorders with insufficient production due to bone marrow dysfunction?

Which term describes a group of bone marrow disorders with insufficient production due to bone marrow dysfunction?

• A. Lymphopenia
• B. Leukemia
• C. Myelodysplastic syndrome
• D. Thrombocytopenia

Answer: (C)

The key idea is a group of bone marrow disorders where the marrow itself fails to produce enough healthy blood cells because the cells mature abnormally. Myelodysplastic syndrome describes these conditions, in which hematopoietic stem cells have clonal abnormalities that disrupt maturation of the red, white, and platelet lineages. Because of ineffective hematopoiesis, fewer mature cells enter circulation, leading to cytopenias such as anemia, neutropenia, or thrombocytopenia. The marrow is often hypercellular with dysplastic cells, and while it isn’t outright leukemia, there is a risk that it can progress to acute myeloid leukemia over time. This differs from lymphopenia, which is just a low lymphocyte count; leukemia, which involves malignant proliferation of abnormal blood cells, and thrombocytopenia, which is specifically a low platelet count from various causes rather than a broad marrow disorder.

The key idea is a group of bone marrow disorders where the marrow itself fails to produce enough healthy blood cells because the cells mature abnormally. Myelodysplastic syndrome describes these conditions, in which hematopoietic stem cells have clonal abnormalities that disrupt maturation of the red, white, and platelet lineages. Because of ineffective hematopoiesis, fewer mature cells enter circulation, leading to cytopenias such as anemia, neutropenia, or thrombocytopenia. The marrow is often hypercellular with dysplastic cells, and while it isn’t outright leukemia, there is a risk that it can progress to acute myeloid leukemia over time. This differs from lymphopenia, which is just a low lymphocyte count; leukemia, which involves malignant proliferation of abnormal blood cells, and thrombocytopenia, which is specifically a low platelet count from various causes rather than a broad marrow disorder.