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Zorluk: KolayPediatric Hematology and Oncology

Match each characteristic peripheral blood smear or microscopic finding with the most likely corresponding pediatric hematologic or oncologic diagnosis.

  • Basophilic stipplingLead toxicity
  • Bite cells and Heinz bodiesGlucose-6-phosphate dehydrogenase deficiency
  • Howell-Jolly bodiesSickle cell disease (post-autosplenectomy)
  • Small, round erythrocytes lacking central pallorHereditary spherocytosis
  • Myeloblasts with rod-shaped intracytoplasmic inclusions (Auer rods)Acute myeloid leukemia

Cevap

The correct pairings link specific morphological anomalies to their pathophysiology: Basophilic stippling matches with lead toxicity, bite cells/Heinz bodies match with G6PD deficiency, Howell-Jolly bodies match with sickle cell disease asplenia, spherocytes match with hereditary spherocytosis, and Auer rods match with acute myeloid leukemia.
Each morphological finding directly reflects the underlying cellular pathology of the disease. Inhibited rRNA breakdown causes basophilic stippling in lead poisoning. Unchecked oxidative stress denatures hemoglobin in G6PD deficiency. Failure of the spleen to cull nuclear remnants leaves Howell-Jolly bodies in sickle cell disease. Cytoskeletal uncoupling forces RBCs into a spherical shape in hereditary spherocytosis. Finally, malignant clonal expansion of myeloid precursors produces myeloblasts with fused primary granules (Auer rods) in AML.

Adım Adım Çözüm

1
Evaluate the finding of basophilic stippling.
Matches with lead toxicity.
Lead toxicity inhibits ribosomal RNA degradation, causing visible ribosomal aggregates.
2
Evaluate the finding of bite cells and Heinz bodies.
Matches with Glucose-6-phosphate dehydrogenase deficiency.
Deficient antioxidant capacity leads to denatured hemoglobin (Heinz bodies) which are partially phagocytosed by splenic macrophages (bite cells).
3
Evaluate the finding of Howell-Jolly bodies.
Matches with Sickle cell disease (post-autosplenectomy).
These are retained nuclear remnants that normally require a functional spleen for removal. Patients with sickle cell disease undergo autosplenectomy during early childhood.
4
Evaluate the finding of small, round erythrocytes lacking central pallor.
Matches with Hereditary spherocytosis.
Cytoskeletal defects lead to membrane blebbing and loss of surface area, resulting in the spherical red blood cells without central pallor.
5
Evaluate the finding of myeloblasts with rod-shaped intracytoplasmic inclusions.
Matches with Acute myeloid leukemia.
Auer rods are fused primary granules pathognomonic for myeloblasts, distinguishing AML from ALL.

Anahtar Kavram

Characteristic peripheral blood smear morphologies provide essential, high-yield diagnostic clues for differentiating common pediatric hematologic and oncologic conditions.
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Pediatric Hematology and Oncology

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