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Difficulty: EasyHematology and Oncology

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

  • SpherocytesAutoimmune hemolytic anemia (AIHA)
  • Bite cells and Heinz bodiesGlucose-6-phosphate dehydrogenase (G6PD) deficiency
  • Schistocytes (helmet cells)Thrombotic thrombocytopenic purpura (TTP)
  • Auer rodsAcute myeloid leukemia (AML)
  • Smudge cellsChronic lymphocytic leukemia (CLL)

Answer

Spherocytes pair with Autoimmune hemolytic anemia; Bite cells pair with G6PD deficiency; Schistocytes pair with Thrombotic thrombocytopenic purpura; Auer rods pair with Acute myeloid leukemia; Smudge cells pair with Chronic lymphocytic leukemia.
Each peripheral smear finding represents a distinct pathophysiological process. Extravascular hemolysis via splenic membrane consumption yields spherocytes (AIHA). Oxidative RBC damage yields Heinz bodies and bite cells (G6PD deficiency). Intravascular mechanical shearing yields schistocytes (TTP). Myeloblast inclusions present as Auer rods (AML). Fragile neoplastic lymphocytes create smudge cells upon manual smearing (CLL).

Step-by-Step Solution

1
Identify the cause of spherocytes.
Matches with Autoimmune hemolytic anemia (AIHA).
Spherocytes result from membrane loss, classically seen in AIHA and hereditary spherocytosis.
2
Identify the condition presenting with bite cells and Heinz bodies.
Matches with Glucose-6-phosphate dehydrogenase (G6PD) deficiency.
Oxidative stress causes hemoglobin precipitation (Heinz bodies) which are 'bitten' out by splenic macrophages.
3
Identify the mechanism creating schistocytes.
Matches with Thrombotic thrombocytopenic purpura (TTP).
Schistocytes indicate microangiopathic hemolytic anemia, resulting from RBC shearing, typical of TTP.
4
Identify the lineage associated with Auer rods.
Matches with Acute myeloid leukemia (AML).
Auer rods are cytoplasmic inclusions specific to the myeloblast lineage seen in AML.
5
Identify the source of smudge cells.
Matches with Chronic lymphocytic leukemia (CLL).
CLL cells are unusually fragile and often burst during slide preparation, appearing as smudge cells.

Key Concept

Peripheral blood smear findings provide immediate diagnostic clues for differentiating various hematologic malignancies and hemolytic anemias based on their specific underlying pathophysiological mechanisms.
Estimated Time:1m 0s
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Topics

Hematology and Oncology

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