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Difficulty: EasyHematology and Oncology

Match the following classic peripheral blood smear findings with their most likely associated hematologic diagnosis.

  • Heinz bodies and bite cellsGlucose-6-phosphate dehydrogenase (G6PD) deficiency
  • Hypersegmented neutrophilsMegaloblastic anemia
  • Smudge cellsChronic lymphocytic leukemia
  • Auer rodsAcute myeloid leukemia
  • SchistocytesThrombotic thrombocytopenic purpura

Answer

Heinz bodies and bite cells are matched with G6PD deficiency; hypersegmented neutrophils with megaloblastic anemia; smudge cells with chronic lymphocytic leukemia; Auer rods with acute myeloid leukemia; and schistocytes with thrombotic thrombocytopenic purpura.
Each peripheral smear finding is pathognomonic or highly characteristic for a specific hematologic disorder based on its underlying pathophysiology (e.g., oxidative stress, impaired DNA synthesis, cell fragility, abnormal lysosomes, or intravascular shearing).

Step-by-Step Solution

1
Evaluate Heinz bodies and bite cells
Matched with Glucose-6-phosphate dehydrogenase (G6PD) deficiency
Oxidative damage to hemoglobin is the primary mechanism in G6PD deficiency, leading to the formation of Heinz bodies and subsequent bite cells.
2
Evaluate Hypersegmented neutrophils
Matched with Megaloblastic anemia
Impaired DNA synthesis causes abnormal nuclear maturation, leading to multi-lobed neutrophils.
3
Evaluate Smudge cells
Matched with Chronic lymphocytic leukemia
The malignant lymphocytes in this leukemia are unusually fragile and break apart on the glass slide during smear preparation.
4
Evaluate Auer rods
Matched with Acute myeloid leukemia
These specific cytoplasmic inclusions are only found in cells of the myeloid lineage, specifically myeloblasts.
5
Evaluate Schistocytes
Matched with Thrombotic thrombocytopenic purpura
Intravascular microthrombi mechanically shear passing red blood cells, creating these characteristic fragments.

Key Concept

Identifying characteristic peripheral blood smear findings is essential for the rapid diagnosis of underlying hematologic and oncologic disorders.
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Topics

Hematology and Oncology

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