A 22 year-old student from Italy visits your office for poor appetite, tiredness and weakness. You ran some laboratory tests which are significant for the following values. Hemoglobin: 10 g/dL (Normal 13.5-17.5 g/dL) Mean corpuscular volume (MCV): 55 μ m³ (80-100 μ m³) Red blood cell distribution width (RDW): 12.5% ( Normal range 11.5% to 14.5%) Serum ferritin: 170 (Normal 20-250 ng/mL) Hemoglobin electrophoresis: Hemoglobin A 87%; Hemoglobin A2 8%, Hemoglobin F 5% What is the most likely diagnosis in this patient?
