1 MCQs in Pediatrics for NEET PG
A 6-year-old boy presents with recurrent hemoptysis, progressive dyspnea, and pallor over 8 months. Chest imaging shows bilateral perihilar alveolar opacities with ground-glass pattern. Investigations reveal hemoglobin 6.8 g/dL with microcytic hypochromic indices, low serum ferritin, and low transferrin saturation. Anti-GBM, ANCA, and ANA are negative; renal function and urinalysis are normal. Fiberoptic bronchoscopy with bronchoalveolar lavage shows progressively bloodier returns. The structure marked **A** in the cytology specimen stains strongly positive with Prussian blue (Perls stain) and comprises >20% of lavaged cells. Which of the following best explains the paradoxical iron deficiency anemia observed in this patient?
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