Anemias USMLE Step 1 Practice Question
A 4-year-old boy presents with a 3-week history of abdominal pain, constipation, and irritability. His family recently moved into an old home undergoing renovation. Vital signs show BP 105/68 mmHg, HR 102/min, RR 22/min, temperature 37.2°C. Laboratory studies reveal microcytic anemia with hemoglobin 9.2 g/dL, and blood lead level of 52 μg/dL. Peripheral smear demonstrates basophilic stippling. No fever or diarrhea is noted. Which of the following is the most likely diagnosis?
Answer choices
- AAutoimmune hemolytic anemia
- BIron deficiency anemia
- CLead poisoningCorrect answer
- DFolate deficiency
- EHemophilia B
- FVitamin B12 deficiency
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